8666920

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{557}}^1$

素因数の和:957

約数の個数: 32

約数和(自身を含む): 19585800

約数和(自身を除く): 10918880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 557, 778, 1114, 1556, 1945, 2228, 2785, 3112, 3890, 4456, 5570, 7780, 11140, 15560, 22280, 216673, 433346, 866692, 1083365, 1733384, 2166730, 4333460, 8666920]

約数ペア:

[(1, 8666920), (2, 4333460), (4, 2166730), (5, 1733384), (8, 1083365), (10, 866692), (20, 433346), (40, 216673), (389, 22280), (557, 15560), (778, 11140), (1114, 7780), (1556, 5570), (1945, 4456), (2228, 3890), (2785, 3112)]