20746320

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{233}}^1$

素因数の和:309

約数の個数: 160

約数和(自身を含む): 75209472

約数和(自身を除く): 54463152

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 53, 56, 60, 70, 80, 84, 105, 106, 112, 120, 140, 159, 168, 210, 212, 233, 240, 265, 280, 318, 336, 371, 420, 424, 466, 530, 560, 636, 699, 742, 795, 840, 848, 932, 1060, 1113, 1165, 1272, 1398, 1484, 1590, 1631, 1680, 1855, 1864, 2120, 2226, 2330, 2544, 2796, 2968, 3180, 3262, 3495, 3710, 3728, 4240, 4452, 4660, 4893, 5565, 5592, 5936, 6360, 6524, 6990, 7420, 8155, 8904, 9320, 9786, 11130, 11184, 12349, 12720, 13048, 13980, 14840, 16310, 17808, 18640, 19572, 22260, 24465, 24698, 26096, 27960, 29680, 32620, 37047, 39144, 44520, 48930, 49396, 55920, 61745, 65240, 74094, 78288, 86443, 89040, 97860, 98792, 123490, 130480, 148188, 172886, 185235, 195720, 197584, 246980, 259329, 296376, 345772, 370470, 391440, 432215, 493960, 518658, 592752, 691544, 740940, 864430, 987920, 1037316, 1296645, 1383088, 1481880, 1728860, 2074632, 2593290, 2963760, 3457720, 4149264, 5186580, 6915440, 10373160, 20746320]

約数ペア:

[(1, 20746320), (2, 10373160), (3, 6915440), (4, 5186580), (5, 4149264), (6, 3457720), (7, 2963760), (8, 2593290), (10, 2074632), (12, 1728860), (14, 1481880), (15, 1383088), (16, 1296645), (20, 1037316), (21, 987920), (24, 864430), (28, 740940), (30, 691544), (35, 592752), (40, 518658), (42, 493960), (48, 432215), (53, 391440), (56, 370470), (60, 345772), (70, 296376), (80, 259329), (84, 246980), (105, 197584), (106, 195720), (112, 185235), (120, 172886), (140, 148188), (159, 130480), (168, 123490), (210, 98792), (212, 97860), (233, 89040), (240, 86443), (265, 78288), (280, 74094), (318, 65240), (336, 61745), (371, 55920), (420, 49396), (424, 48930), (466, 44520), (530, 39144), (560, 37047), (636, 32620), (699, 29680), (742, 27960), (795, 26096), (840, 24698), (848, 24465), (932, 22260), (1060, 19572), (1113, 18640), (1165, 17808), (1272, 16310), (1398, 14840), (1484, 13980), (1590, 13048), (1631, 12720), (1680, 12349), (1855, 11184), (1864, 11130), (2120, 9786), (2226, 9320), (2330, 8904), (2544, 8155), (2796, 7420), (2968, 6990), (3180, 6524), (3262, 6360), (3495, 5936), (3710, 5592), (3728, 5565), (4240, 4893), (4452, 4660)]