21480225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{22031}}^1$

素因数の和:22057

約数の個数: 24

約数和(自身を含む): 38247552

約数和(自身を除く): 16767327

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 22031, 66093, 110155, 286403, 330465, 550775, 859209, 1432015, 1652325, 4296045, 7160075, 21480225]

約数ペア:

[(1, 21480225), (3, 7160075), (5, 4296045), (13, 1652325), (15, 1432015), (25, 859209), (39, 550775), (65, 330465), (75, 286403), (195, 110155), (325, 66093), (975, 22031)]