21192925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1069}}^1$

素因数の和:1153

約数の個数: 24

約数和(自身を含む): 28791560

約数和(自身を除く): 7598635

約数列:

[1, 5, 13, 25, 61, 65, 305, 325, 793, 1069, 1525, 3965, 5345, 13897, 19825, 26725, 65209, 69485, 326045, 347425, 847717, 1630225, 4238585, 21192925]

約数ペア:

[(1, 21192925), (5, 4238585), (13, 1630225), (25, 847717), (61, 347425), (65, 326045), (305, 69485), (325, 65209), (793, 26725), (1069, 19825), (1525, 13897), (3965, 5345)]