890506775

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{643}}^1\times {\mathrm{1787}}^1$

素因数の和:2471

約数の個数: 24

約数和(自身を含む): 1142260224

約数和(自身を除く): 251753449

約数列:

[1, 5, 25, 31, 155, 643, 775, 1787, 3215, 8935, 16075, 19933, 44675, 55397, 99665, 276985, 498325, 1149041, 1384925, 5745205, 28726025, 35620271, 178101355, 890506775]

約数ペア:

[(1, 890506775), (5, 178101355), (25, 35620271), (31, 28726025), (155, 5745205), (643, 1384925), (775, 1149041), (1787, 498325), (3215, 276985), (8935, 99665), (16075, 55397), (19933, 44675)]