21894680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17657}}^1$

素因数の和:17699

約数の個数: 32

約数和(自身を含む): 50855040

約数和(自身を除く): 28960360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17657, 35314, 70628, 88285, 141256, 176570, 353140, 547367, 706280, 1094734, 2189468, 2736835, 4378936, 5473670, 10947340, 21894680]

約数ペア:

[(1, 21894680), (2, 10947340), (4, 5473670), (5, 4378936), (8, 2736835), (10, 2189468), (20, 1094734), (31, 706280), (40, 547367), (62, 353140), (124, 176570), (155, 141256), (248, 88285), (310, 70628), (620, 35314), (1240, 17657)]