20275840

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2437}}^1$

素因数の和:2469

約数の個数: 64

約数和(自身を含む): 52221960

約数和(自身を除く): 31946120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2437, 4160, 4874, 8320, 9748, 12185, 19496, 24370, 31681, 38992, 48740, 63362, 77984, 97480, 126724, 155968, 158405, 194960, 253448, 311936, 316810, 389920, 506896, 633620, 779840, 1013792, 1267240, 1559680, 2027584, 2534480, 4055168, 5068960, 10137920, 20275840]

約数ペア:

[(1, 20275840), (2, 10137920), (4, 5068960), (5, 4055168), (8, 2534480), (10, 2027584), (13, 1559680), (16, 1267240), (20, 1013792), (26, 779840), (32, 633620), (40, 506896), (52, 389920), (64, 316810), (65, 311936), (80, 253448), (104, 194960), (128, 158405), (130, 155968), (160, 126724), (208, 97480), (260, 77984), (320, 63362), (416, 48740), (520, 38992), (640, 31681), (832, 24370), (1040, 19496), (1664, 12185), (2080, 9748), (2437, 8320), (4160, 4874)]