28215385

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{313}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 37585800

約数和(自身を除く): 9370415

約数列:

[1, 5, 11, 55, 121, 149, 313, 605, 745, 1565, 1639, 3443, 8195, 17215, 18029, 37873, 46637, 90145, 189365, 233185, 513007, 2565035, 5643077, 28215385]

約数ペア:

[(1, 28215385), (5, 5643077), (11, 2565035), (55, 513007), (121, 233185), (149, 189365), (313, 90145), (605, 46637), (745, 37873), (1565, 18029), (1639, 17215), (3443, 8195)]