20104240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1487}}^1$

素因数の和:1526

約数の個数: 60

約数和(自身を含む): 50648544

約数和(自身を除く): 30544304

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1487, 1690, 2704, 2974, 3380, 5948, 6760, 7435, 11896, 13520, 14870, 19331, 23792, 29740, 38662, 59480, 77324, 96655, 118960, 154648, 193310, 251303, 309296, 386620, 502606, 773240, 1005212, 1256515, 1546480, 2010424, 2513030, 4020848, 5026060, 10052120, 20104240]

約数ペア:

[(1, 20104240), (2, 10052120), (4, 5026060), (5, 4020848), (8, 2513030), (10, 2010424), (13, 1546480), (16, 1256515), (20, 1005212), (26, 773240), (40, 502606), (52, 386620), (65, 309296), (80, 251303), (104, 193310), (130, 154648), (169, 118960), (208, 96655), (260, 77324), (338, 59480), (520, 38662), (676, 29740), (845, 23792), (1040, 19331), (1352, 14870), (1487, 13520), (1690, 11896), (2704, 7435), (2974, 6760), (3380, 5948)]