12730705

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 17908128

約数和(自身を除く): 5177423

約数列:

[1, 5, 13, 17, 41, 65, 85, 205, 221, 281, 533, 697, 1105, 1405, 2665, 3485, 3653, 4777, 9061, 11521, 18265, 23885, 45305, 57605, 62101, 149773, 195857, 310505, 748865, 979285, 2546141, 12730705]

約数ペア:

[(1, 12730705), (5, 2546141), (13, 979285), (17, 748865), (41, 310505), (65, 195857), (85, 149773), (205, 62101), (221, 57605), (281, 45305), (533, 23885), (697, 18265), (1105, 11521), (1405, 9061), (2665, 4777), (3485, 3653)]