129545560

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{15349}}^1$

素因数の和:15571

約数の個数: 32

約数和(自身を含む): 292878000

約数和(自身を除く): 163332440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 15349, 30698, 61396, 76745, 122792, 153490, 306980, 613960, 3238639, 6477278, 12954556, 16193195, 25909112, 32386390, 64772780, 129545560]

約数ペア:

[(1, 129545560), (2, 64772780), (4, 32386390), (5, 25909112), (8, 16193195), (10, 12954556), (20, 6477278), (40, 3238639), (211, 613960), (422, 306980), (844, 153490), (1055, 122792), (1688, 76745), (2110, 61396), (4220, 30698), (8440, 15349)]