13220487

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1213}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 21968544

約数和(自身を除く): 8748057

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1213, 1557, 3633, 3639, 8491, 10899, 10917, 25473, 76419, 209849, 629547, 1468943, 1888641, 4406829, 13220487]

約数ペア:

[(1, 13220487), (3, 4406829), (7, 1888641), (9, 1468943), (21, 629547), (63, 209849), (173, 76419), (519, 25473), (1211, 10917), (1213, 10899), (1557, 8491), (3633, 3639)]