20065240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{821}}^1$

素因数の和:892

約数の個数: 64

約数和(自身を含む): 49714560

約数和(自身を除く): 29649320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 188, 235, 260, 376, 470, 520, 611, 821, 940, 1222, 1642, 1880, 2444, 3055, 3284, 4105, 4888, 6110, 6568, 8210, 10673, 12220, 16420, 21346, 24440, 32840, 38587, 42692, 53365, 77174, 85384, 106730, 154348, 192935, 213460, 308696, 385870, 426920, 501631, 771740, 1003262, 1543480, 2006524, 2508155, 4013048, 5016310, 10032620, 20065240]

約数ペア:

[(1, 20065240), (2, 10032620), (4, 5016310), (5, 4013048), (8, 2508155), (10, 2006524), (13, 1543480), (20, 1003262), (26, 771740), (40, 501631), (47, 426920), (52, 385870), (65, 308696), (94, 213460), (104, 192935), (130, 154348), (188, 106730), (235, 85384), (260, 77174), (376, 53365), (470, 42692), (520, 38587), (611, 32840), (821, 24440), (940, 21346), (1222, 16420), (1642, 12220), (1880, 10673), (2444, 8210), (3055, 6568), (3284, 6110), (4105, 4888)]