21475380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{359}}^1\times {\mathrm{997}}^1$

素因数の和:1368

約数の個数: 48

約数和(自身を含む): 60359040

約数和(自身を除く): 38883660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 359, 718, 997, 1077, 1436, 1795, 1994, 2154, 2991, 3590, 3988, 4308, 4985, 5385, 5982, 7180, 9970, 10770, 11964, 14955, 19940, 21540, 29910, 59820, 357923, 715846, 1073769, 1431692, 1789615, 2147538, 3579230, 4295076, 5368845, 7158460, 10737690, 21475380]

約数ペア:

[(1, 21475380), (2, 10737690), (3, 7158460), (4, 5368845), (5, 4295076), (6, 3579230), (10, 2147538), (12, 1789615), (15, 1431692), (20, 1073769), (30, 715846), (60, 357923), (359, 59820), (718, 29910), (997, 21540), (1077, 19940), (1436, 14955), (1795, 11964), (1994, 10770), (2154, 9970), (2991, 7180), (3590, 5982), (3988, 5385), (4308, 4985)]