20897175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21433}}^1$

素因数の和:21459

約数の個数: 24

約数和(自身を含む): 37209424

約数和(自身を除く): 16312249

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 21433, 64299, 107165, 278629, 321495, 535825, 835887, 1393145, 1607475, 4179435, 6965725, 20897175]

約数ペア:

[(1, 20897175), (3, 6965725), (5, 4179435), (13, 1607475), (15, 1393145), (25, 835887), (39, 535825), (65, 321495), (75, 278629), (195, 107165), (325, 64299), (975, 21433)]