18969775

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6271}}^1$

素因数の和:6303

約数の個数: 18

約数和(自身を含む): 25859456

約数和(自身を除く): 6889681

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6271, 31355, 68981, 156775, 344905, 758791, 1724525, 3793955, 18969775]

約数ペア:

[(1, 18969775), (5, 3793955), (11, 1724525), (25, 758791), (55, 344905), (121, 156775), (275, 68981), (605, 31355), (3025, 6271)]