20497555

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{3251}}^1$

素因数の和:3366

約数の個数: 16

約数和(自身を含む): 26770464

約数和(自身を除く): 6272909

約数列:

[1, 5, 13, 65, 97, 485, 1261, 3251, 6305, 16255, 42263, 211315, 315347, 1576735, 4099511, 20497555]

約数ペア:

[(1, 20497555), (5, 4099511), (13, 1576735), (65, 315347), (97, 211315), (485, 42263), (1261, 16255), (3251, 6305)]