28490825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{331}}^1$

素因数の和:665

約数の個数: 24

約数和(自身を含む): 38780256

約数和(自身を除く): 10289431

約数列:

[1, 5, 11, 25, 55, 275, 313, 331, 1565, 1655, 3443, 3641, 7825, 8275, 17215, 18205, 86075, 91025, 103603, 518015, 1139633, 2590075, 5698165, 28490825]

約数ペア:

[(1, 28490825), (5, 5698165), (11, 2590075), (25, 1139633), (55, 518015), (275, 103603), (313, 91025), (331, 86075), (1565, 18205), (1655, 17215), (3443, 8275), (3641, 7825)]