85120880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{81847}}^1$

素因数の和:81873

約数の個数: 40

約数和(自身を含む): 213132192

約数和(自身を除く): 128011312

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 81847, 163694, 327388, 409235, 654776, 818470, 1064011, 1309552, 1636940, 2128022, 3273880, 4256044, 5320055, 6547760, 8512088, 10640110, 17024176, 21280220, 42560440, 85120880]

約数ペア:

[(1, 85120880), (2, 42560440), (4, 21280220), (5, 17024176), (8, 10640110), (10, 8512088), (13, 6547760), (16, 5320055), (20, 4256044), (26, 3273880), (40, 2128022), (52, 1636940), (65, 1309552), (80, 1064011), (104, 818470), (130, 654776), (208, 409235), (260, 327388), (520, 163694), (1040, 81847)]