8701640

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1031}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 19690560

約数和(自身を除く): 10988920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1031, 1055, 1688, 2062, 2110, 4124, 4220, 5155, 8248, 8440, 10310, 20620, 41240, 217541, 435082, 870164, 1087705, 1740328, 2175410, 4350820, 8701640]

約数ペア:

[(1, 8701640), (2, 4350820), (4, 2175410), (5, 1740328), (8, 1087705), (10, 870164), (20, 435082), (40, 217541), (211, 41240), (422, 20620), (844, 10310), (1031, 8440), (1055, 8248), (1688, 5155), (2062, 4220), (2110, 4124)]