86991640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{27529}}^1$

素因数の和:27619

約数の個数: 32

約数和(自身を含む): 198216000

約数和(自身を除く): 111224360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 27529, 55058, 110116, 137645, 220232, 275290, 550580, 1101160, 2174791, 4349582, 8699164, 10873955, 17398328, 21747910, 43495820, 86991640]

約数ペア:

[(1, 86991640), (2, 43495820), (4, 21747910), (5, 17398328), (8, 10873955), (10, 8699164), (20, 4349582), (40, 2174791), (79, 1101160), (158, 550580), (316, 275290), (395, 220232), (632, 137645), (790, 110116), (1580, 55058), (3160, 27529)]