21891225

素因数分解:

$3^1\times 5^2\times {\mathrm{151}}^1\times {\mathrm{1933}}^1$

素因数の和:2097

約数の個数: 24

約数和(自身を含む): 36452032

約数和(自身を除く): 14560807

約数列:

[1, 3, 5, 15, 25, 75, 151, 453, 755, 1933, 2265, 3775, 5799, 9665, 11325, 28995, 48325, 144975, 291883, 875649, 1459415, 4378245, 7297075, 21891225]

約数ペア:

[(1, 21891225), (3, 7297075), (5, 4378245), (15, 1459415), (25, 875649), (75, 291883), (151, 144975), (453, 48325), (755, 28995), (1933, 11325), (2265, 9665), (3775, 5799)]