20664476

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 45964800

約数和(自身を除く): 25300324

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 49, 62, 76, 98, 124, 133, 179, 196, 217, 266, 358, 434, 532, 589, 716, 868, 931, 1178, 1253, 1519, 1862, 2356, 2506, 3038, 3401, 3724, 4123, 5012, 5549, 6076, 6802, 8246, 8771, 11098, 13604, 16492, 17542, 22196, 23807, 28861, 35084, 38843, 47614, 57722, 77686, 95228, 105431, 115444, 155372, 166649, 210862, 271901, 333298, 421724, 543802, 666596, 738017, 1087604, 1476034, 2952068, 5166119, 10332238, 20664476]

約数ペア:

[(1, 20664476), (2, 10332238), (4, 5166119), (7, 2952068), (14, 1476034), (19, 1087604), (28, 738017), (31, 666596), (38, 543802), (49, 421724), (62, 333298), (76, 271901), (98, 210862), (124, 166649), (133, 155372), (179, 115444), (196, 105431), (217, 95228), (266, 77686), (358, 57722), (434, 47614), (532, 38843), (589, 35084), (716, 28861), (868, 23807), (931, 22196), (1178, 17542), (1253, 16492), (1519, 13604), (1862, 11098), (2356, 8771), (2506, 8246), (3038, 6802), (3401, 6076), (3724, 5549), (4123, 5012)]