20181120

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{457}}^1$

素因数の和:502

約数の個数: 128

約数和(自身を含む): 67271040

約数和(自身を除く): 47089920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 128, 138, 160, 184, 192, 230, 240, 276, 320, 345, 368, 384, 457, 460, 480, 552, 640, 690, 736, 914, 920, 960, 1104, 1371, 1380, 1472, 1828, 1840, 1920, 2208, 2285, 2742, 2760, 2944, 3656, 3680, 4416, 4570, 5484, 5520, 6855, 7312, 7360, 8832, 9140, 10511, 10968, 11040, 13710, 14624, 14720, 18280, 21022, 21936, 22080, 27420, 29248, 31533, 36560, 42044, 43872, 44160, 52555, 54840, 58496, 63066, 73120, 84088, 87744, 105110, 109680, 126132, 146240, 157665, 168176, 175488, 210220, 219360, 252264, 292480, 315330, 336352, 420440, 438720, 504528, 630660, 672704, 840880, 877440, 1009056, 1261320, 1345408, 1681760, 2018112, 2522640, 3363520, 4036224, 5045280, 6727040, 10090560, 20181120]

約数ペア:

[(1, 20181120), (2, 10090560), (3, 6727040), (4, 5045280), (5, 4036224), (6, 3363520), (8, 2522640), (10, 2018112), (12, 1681760), (15, 1345408), (16, 1261320), (20, 1009056), (23, 877440), (24, 840880), (30, 672704), (32, 630660), (40, 504528), (46, 438720), (48, 420440), (60, 336352), (64, 315330), (69, 292480), (80, 252264), (92, 219360), (96, 210220), (115, 175488), (120, 168176), (128, 157665), (138, 146240), (160, 126132), (184, 109680), (192, 105110), (230, 87744), (240, 84088), (276, 73120), (320, 63066), (345, 58496), (368, 54840), (384, 52555), (457, 44160), (460, 43872), (480, 42044), (552, 36560), (640, 31533), (690, 29248), (736, 27420), (914, 22080), (920, 21936), (960, 21022), (1104, 18280), (1371, 14720), (1380, 14624), (1472, 13710), (1828, 11040), (1840, 10968), (1920, 10511), (2208, 9140), (2285, 8832), (2742, 7360), (2760, 7312), (2944, 6855), (3656, 5520), (3680, 5484), (4416, 4570)]