19648225

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{661}}^1$

素因数の和:741

約数の個数: 24

約数和(自身を含む): 25857720

約数和(自身を除く): 6209495

約数列:

[1, 5, 25, 29, 41, 145, 205, 661, 725, 1025, 1189, 3305, 5945, 16525, 19169, 27101, 29725, 95845, 135505, 479225, 677525, 785929, 3929645, 19648225]

約数ペア:

[(1, 19648225), (5, 3929645), (25, 785929), (29, 677525), (41, 479225), (145, 135505), (205, 95845), (661, 29725), (725, 27101), (1025, 19169), (1189, 16525), (3305, 5945)]