2217215

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 3580416

約数和(自身を除く): 1363201

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 443, 455, 715, 1001, 2215, 3101, 4873, 5005, 5759, 15505, 24365, 28795, 34111, 40313, 63349, 170555, 201565, 316745, 443443, 2217215]

約数ペア:

[(1, 2217215), (5, 443443), (7, 316745), (11, 201565), (13, 170555), (35, 63349), (55, 40313), (65, 34111), (77, 28795), (91, 24365), (143, 15505), (385, 5759), (443, 5005), (455, 4873), (715, 3101), (1001, 2215)]