20463905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2311}}^1$

素因数の和:2357

約数の個数: 32

約数和(自身を含む): 31961088

約数和(自身を除く): 11497183

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 2311, 8855, 11555, 16177, 25421, 53153, 80885, 127105, 177947, 265765, 372071, 584683, 889735, 1860355, 2923415, 4092781, 20463905]

約数ペア:

[(1, 20463905), (5, 4092781), (7, 2923415), (11, 1860355), (23, 889735), (35, 584683), (55, 372071), (77, 265765), (115, 177947), (161, 127105), (253, 80885), (385, 53153), (805, 25421), (1265, 16177), (1771, 11555), (2311, 8855)]