21793785

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1531}}^1$

素因数の和:1625

約数の個数: 32

約数和(自身を含む): 38091648

約数和(自身を除く): 16297863

約数列:

[1, 3, 5, 13, 15, 39, 65, 73, 195, 219, 365, 949, 1095, 1531, 2847, 4593, 4745, 7655, 14235, 19903, 22965, 59709, 99515, 111763, 298545, 335289, 558815, 1452919, 1676445, 4358757, 7264595, 21793785]

約数ペア:

[(1, 21793785), (3, 7264595), (5, 4358757), (13, 1676445), (15, 1452919), (39, 558815), (65, 335289), (73, 298545), (195, 111763), (219, 99515), (365, 59709), (949, 22965), (1095, 19903), (1531, 14235), (2847, 7655), (4593, 4745)]