21677920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:248

約数の個数: 96

約数和(自身を含む): 56881440

約数和(自身を除く): 35203520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 109, 110, 113, 160, 176, 218, 220, 226, 352, 436, 440, 452, 545, 565, 872, 880, 904, 1090, 1130, 1199, 1243, 1744, 1760, 1808, 2180, 2260, 2398, 2486, 3488, 3616, 4360, 4520, 4796, 4972, 5995, 6215, 8720, 9040, 9592, 9944, 11990, 12317, 12430, 17440, 18080, 19184, 19888, 23980, 24634, 24860, 38368, 39776, 47960, 49268, 49720, 61585, 95920, 98536, 99440, 123170, 135487, 191840, 197072, 198880, 246340, 270974, 394144, 492680, 541948, 677435, 985360, 1083896, 1354870, 1970720, 2167792, 2709740, 4335584, 5419480, 10838960, 21677920]

約数ペア:

[(1, 21677920), (2, 10838960), (4, 5419480), (5, 4335584), (8, 2709740), (10, 2167792), (11, 1970720), (16, 1354870), (20, 1083896), (22, 985360), (32, 677435), (40, 541948), (44, 492680), (55, 394144), (80, 270974), (88, 246340), (109, 198880), (110, 197072), (113, 191840), (160, 135487), (176, 123170), (218, 99440), (220, 98536), (226, 95920), (352, 61585), (436, 49720), (440, 49268), (452, 47960), (545, 39776), (565, 38368), (872, 24860), (880, 24634), (904, 23980), (1090, 19888), (1130, 19184), (1199, 18080), (1243, 17440), (1744, 12430), (1760, 12317), (1808, 11990), (2180, 9944), (2260, 9592), (2398, 9040), (2486, 8720), (3488, 6215), (3616, 5995), (4360, 4972), (4520, 4796)]