165285640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317857}}^1$

素因数の和:317881

約数の個数: 32

約数和(自身を含む): 400501080

約数和(自身を除く): 235215440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 317857, 635714, 1271428, 1589285, 2542856, 3178570, 4132141, 6357140, 8264282, 12714280, 16528564, 20660705, 33057128, 41321410, 82642820, 165285640]

約数ペア:

[(1, 165285640), (2, 82642820), (4, 41321410), (5, 33057128), (8, 20660705), (10, 16528564), (13, 12714280), (20, 8264282), (26, 6357140), (40, 4132141), (52, 3178570), (65, 2542856), (104, 1589285), (130, 1271428), (260, 635714), (520, 317857)]