87680840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{168617}}^1$

素因数の和:168641

約数の個数: 32

約数和(自身を含む): 212458680

約数和(自身を除く): 124777840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 168617, 337234, 674468, 843085, 1348936, 1686170, 2192021, 3372340, 4384042, 6744680, 8768084, 10960105, 17536168, 21920210, 43840420, 87680840]

約数ペア:

[(1, 87680840), (2, 43840420), (4, 21920210), (5, 17536168), (8, 10960105), (10, 8768084), (13, 6744680), (20, 4384042), (26, 3372340), (40, 2192021), (52, 1686170), (65, 1348936), (104, 843085), (130, 674468), (260, 337234), (520, 168617)]