13009775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 17298000

約数和(自身を除く): 4288225

約数列:

[1, 5, 19, 25, 61, 95, 305, 449, 475, 1159, 1525, 2245, 5795, 8531, 11225, 27389, 28975, 42655, 136945, 213275, 520391, 684725, 2601955, 13009775]

約数ペア:

[(1, 13009775), (5, 2601955), (19, 684725), (25, 520391), (61, 213275), (95, 136945), (305, 42655), (449, 28975), (475, 27389), (1159, 11225), (1525, 8531), (2245, 5795)]