20742480

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1$

素因数の和:136

約数の個数: 240

約数和(自身を含む): 79619904

約数和(自身を除く): 58877424

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 81, 88, 90, 97, 99, 108, 110, 120, 132, 135, 144, 162, 165, 176, 180, 194, 198, 216, 220, 240, 243, 264, 270, 291, 297, 324, 330, 360, 388, 396, 405, 432, 440, 485, 486, 495, 528, 540, 582, 594, 648, 660, 720, 776, 792, 810, 873, 880, 891, 970, 972, 990, 1067, 1080, 1164, 1188, 1215, 1296, 1320, 1455, 1485, 1552, 1584, 1620, 1746, 1782, 1940, 1944, 1980, 2134, 2160, 2328, 2376, 2430, 2619, 2640, 2673, 2910, 2970, 3201, 3240, 3492, 3564, 3880, 3888, 3960, 4268, 4365, 4455, 4656, 4752, 4860, 5238, 5335, 5346, 5820, 5940, 6402, 6480, 6984, 7128, 7760, 7857, 7920, 8536, 8730, 8910, 9603, 9720, 10476, 10670, 10692, 11640, 11880, 12804, 13095, 13365, 13968, 14256, 15714, 16005, 17072, 17460, 17820, 19206, 19440, 20952, 21340, 21384, 23280, 23571, 23760, 25608, 26190, 26730, 28809, 31428, 32010, 34920, 35640, 38412, 39285, 41904, 42680, 42768, 47142, 48015, 51216, 52380, 53460, 57618, 62856, 64020, 69840, 71280, 76824, 78570, 85360, 86427, 94284, 96030, 104760, 106920, 115236, 117855, 125712, 128040, 144045, 153648, 157140, 172854, 188568, 192060, 209520, 213840, 230472, 235710, 256080, 259281, 288090, 314280, 345708, 377136, 384120, 432135, 460944, 471420, 518562, 576180, 628560, 691416, 768240, 864270, 942840, 1037124, 1152360, 1296405, 1382832, 1728540, 1885680, 2074248, 2304720, 2592810, 3457080, 4148496, 5185620, 6914160, 10371240, 20742480]

約数ペア:

[(1, 20742480), (2, 10371240), (3, 6914160), (4, 5185620), (5, 4148496), (6, 3457080), (8, 2592810), (9, 2304720), (10, 2074248), (11, 1885680), (12, 1728540), (15, 1382832), (16, 1296405), (18, 1152360), (20, 1037124), (22, 942840), (24, 864270), (27, 768240), (30, 691416), (33, 628560), (36, 576180), (40, 518562), (44, 471420), (45, 460944), (48, 432135), (54, 384120), (55, 377136), (60, 345708), (66, 314280), (72, 288090), (80, 259281), (81, 256080), (88, 235710), (90, 230472), (97, 213840), (99, 209520), (108, 192060), (110, 188568), (120, 172854), (132, 157140), (135, 153648), (144, 144045), (162, 128040), (165, 125712), (176, 117855), (180, 115236), (194, 106920), (198, 104760), (216, 96030), (220, 94284), (240, 86427), (243, 85360), (264, 78570), (270, 76824), (291, 71280), (297, 69840), (324, 64020), (330, 62856), (360, 57618), (388, 53460), (396, 52380), (405, 51216), (432, 48015), (440, 47142), (485, 42768), (486, 42680), (495, 41904), (528, 39285), (540, 38412), (582, 35640), (594, 34920), (648, 32010), (660, 31428), (720, 28809), (776, 26730), (792, 26190), (810, 25608), (873, 23760), (880, 23571), (891, 23280), (970, 21384), (972, 21340), (990, 20952), (1067, 19440), (1080, 19206), (1164, 17820), (1188, 17460), (1215, 17072), (1296, 16005), (1320, 15714), (1455, 14256), (1485, 13968), (1552, 13365), (1584, 13095), (1620, 12804), (1746, 11880), (1782, 11640), (1940, 10692), (1944, 10670), (1980, 10476), (2134, 9720), (2160, 9603), (2328, 8910), (2376, 8730), (2430, 8536), (2619, 7920), (2640, 7857), (2673, 7760), (2910, 7128), (2970, 6984), (3201, 6480), (3240, 6402), (3492, 5940), (3564, 5820), (3880, 5346), (3888, 5335), (3960, 5238), (4268, 4860), (4365, 4752), (4455, 4656)]