20015520

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:92

約数の個数: 288

約数和(自身を含む): 78599808

約数和(自身を除く): 58584288

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 37, 40, 42, 46, 48, 49, 56, 60, 69, 70, 74, 80, 84, 92, 96, 98, 105, 111, 112, 115, 120, 138, 140, 147, 148, 160, 161, 168, 184, 185, 196, 210, 222, 224, 230, 240, 245, 259, 276, 280, 294, 296, 322, 336, 345, 368, 370, 392, 420, 444, 460, 480, 483, 490, 518, 552, 555, 560, 588, 592, 644, 672, 690, 735, 736, 740, 777, 784, 805, 840, 851, 888, 920, 966, 980, 1036, 1104, 1110, 1120, 1127, 1176, 1184, 1288, 1295, 1380, 1470, 1480, 1554, 1568, 1610, 1680, 1702, 1776, 1813, 1840, 1932, 1960, 2072, 2208, 2220, 2254, 2352, 2415, 2553, 2576, 2590, 2760, 2940, 2960, 3108, 3220, 3360, 3381, 3404, 3552, 3626, 3680, 3864, 3885, 3920, 4144, 4255, 4440, 4508, 4704, 4830, 5106, 5152, 5180, 5439, 5520, 5635, 5880, 5920, 5957, 6216, 6440, 6762, 6808, 7252, 7728, 7770, 7840, 8288, 8510, 8880, 9016, 9065, 9660, 10212, 10360, 10878, 11040, 11270, 11760, 11914, 12432, 12765, 12880, 13524, 13616, 14504, 15456, 15540, 16905, 17020, 17760, 17871, 18032, 18130, 19320, 20424, 20720, 21756, 22540, 23520, 23828, 24864, 25530, 25760, 27048, 27195, 27232, 29008, 29785, 31080, 33810, 34040, 35742, 36064, 36260, 38640, 40848, 41440, 41699, 43512, 45080, 47656, 51060, 54096, 54390, 58016, 59570, 62160, 67620, 68080, 71484, 72520, 77280, 81696, 83398, 87024, 89355, 90160, 95312, 102120, 108192, 108780, 119140, 124320, 125097, 135240, 136160, 142968, 145040, 166796, 174048, 178710, 180320, 190624, 204240, 208495, 217560, 238280, 250194, 270480, 285936, 290080, 333592, 357420, 408480, 416990, 435120, 476560, 500388, 540960, 571872, 625485, 667184, 714840, 833980, 870240, 953120, 1000776, 1250970, 1334368, 1429680, 1667960, 2001552, 2501940, 2859360, 3335920, 4003104, 5003880, 6671840, 10007760, 20015520]

約数ペア:

[(1, 20015520), (2, 10007760), (3, 6671840), (4, 5003880), (5, 4003104), (6, 3335920), (7, 2859360), (8, 2501940), (10, 2001552), (12, 1667960), (14, 1429680), (15, 1334368), (16, 1250970), (20, 1000776), (21, 953120), (23, 870240), (24, 833980), (28, 714840), (30, 667184), (32, 625485), (35, 571872), (37, 540960), (40, 500388), (42, 476560), (46, 435120), (48, 416990), (49, 408480), (56, 357420), (60, 333592), (69, 290080), (70, 285936), (74, 270480), (80, 250194), (84, 238280), (92, 217560), (96, 208495), (98, 204240), (105, 190624), (111, 180320), (112, 178710), (115, 174048), (120, 166796), (138, 145040), (140, 142968), (147, 136160), (148, 135240), (160, 125097), (161, 124320), (168, 119140), (184, 108780), (185, 108192), (196, 102120), (210, 95312), (222, 90160), (224, 89355), (230, 87024), (240, 83398), (245, 81696), (259, 77280), (276, 72520), (280, 71484), (294, 68080), (296, 67620), (322, 62160), (336, 59570), (345, 58016), (368, 54390), (370, 54096), (392, 51060), (420, 47656), (444, 45080), (460, 43512), (480, 41699), (483, 41440), (490, 40848), (518, 38640), (552, 36260), (555, 36064), (560, 35742), (588, 34040), (592, 33810), (644, 31080), (672, 29785), (690, 29008), (735, 27232), (736, 27195), (740, 27048), (777, 25760), (784, 25530), (805, 24864), (840, 23828), (851, 23520), (888, 22540), (920, 21756), (966, 20720), (980, 20424), (1036, 19320), (1104, 18130), (1110, 18032), (1120, 17871), (1127, 17760), (1176, 17020), (1184, 16905), (1288, 15540), (1295, 15456), (1380, 14504), (1470, 13616), (1480, 13524), (1554, 12880), (1568, 12765), (1610, 12432), (1680, 11914), (1702, 11760), (1776, 11270), (1813, 11040), (1840, 10878), (1932, 10360), (1960, 10212), (2072, 9660), (2208, 9065), (2220, 9016), (2254, 8880), (2352, 8510), (2415, 8288), (2553, 7840), (2576, 7770), (2590, 7728), (2760, 7252), (2940, 6808), (2960, 6762), (3108, 6440), (3220, 6216), (3360, 5957), (3381, 5920), (3404, 5880), (3552, 5635), (3626, 5520), (3680, 5439), (3864, 5180), (3885, 5152), (3920, 5106), (4144, 4830), (4255, 4704), (4440, 4508)]