21649440

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:131

約数の個数: 192

約数和(自身を含む): 74462976

約数和(自身を除く): 52813536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 37, 40, 46, 48, 53, 60, 69, 74, 80, 92, 96, 106, 111, 115, 120, 138, 148, 159, 160, 184, 185, 212, 222, 230, 240, 265, 276, 296, 318, 345, 368, 370, 424, 444, 460, 480, 530, 552, 555, 592, 636, 690, 736, 740, 795, 848, 851, 888, 920, 1060, 1104, 1110, 1184, 1219, 1272, 1380, 1480, 1590, 1696, 1702, 1776, 1840, 1961, 2120, 2208, 2220, 2438, 2544, 2553, 2760, 2960, 3180, 3404, 3552, 3657, 3680, 3922, 4240, 4255, 4440, 4876, 5088, 5106, 5520, 5883, 5920, 6095, 6360, 6808, 7314, 7844, 8480, 8510, 8880, 9752, 9805, 10212, 11040, 11766, 12190, 12720, 12765, 13616, 14628, 15688, 17020, 17760, 18285, 19504, 19610, 20424, 23532, 24380, 25440, 25530, 27232, 29256, 29415, 31376, 34040, 36570, 39008, 39220, 40848, 45103, 47064, 48760, 51060, 58512, 58830, 62752, 68080, 73140, 78440, 81696, 90206, 94128, 97520, 102120, 117024, 117660, 135309, 136160, 146280, 156880, 180412, 188256, 195040, 204240, 225515, 235320, 270618, 292560, 313760, 360824, 408480, 451030, 470640, 541236, 585120, 676545, 721648, 902060, 941280, 1082472, 1353090, 1443296, 1804120, 2164944, 2706180, 3608240, 4329888, 5412360, 7216480, 10824720, 21649440]

約数ペア:

[(1, 21649440), (2, 10824720), (3, 7216480), (4, 5412360), (5, 4329888), (6, 3608240), (8, 2706180), (10, 2164944), (12, 1804120), (15, 1443296), (16, 1353090), (20, 1082472), (23, 941280), (24, 902060), (30, 721648), (32, 676545), (37, 585120), (40, 541236), (46, 470640), (48, 451030), (53, 408480), (60, 360824), (69, 313760), (74, 292560), (80, 270618), (92, 235320), (96, 225515), (106, 204240), (111, 195040), (115, 188256), (120, 180412), (138, 156880), (148, 146280), (159, 136160), (160, 135309), (184, 117660), (185, 117024), (212, 102120), (222, 97520), (230, 94128), (240, 90206), (265, 81696), (276, 78440), (296, 73140), (318, 68080), (345, 62752), (368, 58830), (370, 58512), (424, 51060), (444, 48760), (460, 47064), (480, 45103), (530, 40848), (552, 39220), (555, 39008), (592, 36570), (636, 34040), (690, 31376), (736, 29415), (740, 29256), (795, 27232), (848, 25530), (851, 25440), (888, 24380), (920, 23532), (1060, 20424), (1104, 19610), (1110, 19504), (1184, 18285), (1219, 17760), (1272, 17020), (1380, 15688), (1480, 14628), (1590, 13616), (1696, 12765), (1702, 12720), (1776, 12190), (1840, 11766), (1961, 11040), (2120, 10212), (2208, 9805), (2220, 9752), (2438, 8880), (2544, 8510), (2553, 8480), (2760, 7844), (2960, 7314), (3180, 6808), (3404, 6360), (3552, 6095), (3657, 5920), (3680, 5883), (3922, 5520), (4240, 5106), (4255, 5088), (4440, 4876)]