87858490

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1\times {\mathrm{509}}^1$

素因数の和:978

約数の個数: 32

約数和(自身を含む): 162706320

約数和(自身を除く): 74847830

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 421, 509, 842, 1018, 2105, 2545, 4210, 5090, 17261, 20869, 34522, 41738, 86305, 104345, 172610, 208690, 214289, 428578, 1071445, 2142890, 8785849, 17571698, 43929245, 87858490]

約数ペア:

[(1, 87858490), (2, 43929245), (5, 17571698), (10, 8785849), (41, 2142890), (82, 1071445), (205, 428578), (410, 214289), (421, 208690), (509, 172610), (842, 104345), (1018, 86305), (2105, 41738), (2545, 34522), (4210, 20869), (5090, 17261)]