19816775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6551}}^1$

素因数の和:6583

約数の個数: 18

約数和(自身を含む): 27013896

約数和(自身を除く): 7197121

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6551, 32755, 72061, 163775, 360305, 792671, 1801525, 3963355, 19816775]

約数ペア:

[(1, 19816775), (5, 3963355), (11, 1801525), (25, 792671), (55, 360305), (121, 163775), (275, 72061), (605, 32755), (3025, 6551)]