818680

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 1869840

約数和(自身を除く): 1051160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 211, 388, 422, 485, 776, 844, 970, 1055, 1688, 1940, 2110, 3880, 4220, 8440, 20467, 40934, 81868, 102335, 163736, 204670, 409340, 818680]

約数ペア:

[(1, 818680), (2, 409340), (4, 204670), (5, 163736), (8, 102335), (10, 81868), (20, 40934), (40, 20467), (97, 8440), (194, 4220), (211, 3880), (388, 2110), (422, 1940), (485, 1688), (776, 1055), (844, 970)]