19750225

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6529}}^1$

素因数の和:6561

約数の個数: 18

約数和(自身を含む): 26923190

約数和(自身を除く): 7172965

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6529, 32645, 71819, 163225, 359095, 790009, 1795475, 3950045, 19750225]

約数ペア:

[(1, 19750225), (5, 3950045), (11, 1795475), (25, 790009), (55, 359095), (121, 163225), (275, 71819), (605, 32645), (3025, 6529)]