31808240

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4099}}^1$

素因数の和:4209

約数の個数: 40

約数和(自身を含む): 74734800

約数和(自身を除く): 42926560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 4099, 7760, 8198, 16396, 20495, 32792, 40990, 65584, 81980, 163960, 327920, 397603, 795206, 1590412, 1988015, 3180824, 3976030, 6361648, 7952060, 15904120, 31808240]

約数ペア:

[(1, 31808240), (2, 15904120), (4, 7952060), (5, 6361648), (8, 3976030), (10, 3180824), (16, 1988015), (20, 1590412), (40, 795206), (80, 397603), (97, 327920), (194, 163960), (388, 81980), (485, 65584), (776, 40990), (970, 32792), (1552, 20495), (1940, 16396), (3880, 8198), (4099, 7760)]