21495660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1499}}^1$

素因数の和:1750

約数の個数: 48

約数和(自身を含む): 60480000

約数和(自身を除く): 38984340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 239, 478, 717, 956, 1195, 1434, 1499, 2390, 2868, 2998, 3585, 4497, 4780, 5996, 7170, 7495, 8994, 14340, 14990, 17988, 22485, 29980, 44970, 89940, 358261, 716522, 1074783, 1433044, 1791305, 2149566, 3582610, 4299132, 5373915, 7165220, 10747830, 21495660]

約数ペア:

[(1, 21495660), (2, 10747830), (3, 7165220), (4, 5373915), (5, 4299132), (6, 3582610), (10, 2149566), (12, 1791305), (15, 1433044), (20, 1074783), (30, 716522), (60, 358261), (239, 89940), (478, 44970), (717, 29980), (956, 22485), (1195, 17988), (1434, 14990), (1499, 14340), (2390, 8994), (2868, 7495), (2998, 7170), (3585, 5996), (4497, 4780)]