20177885

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{727}}^1$

素因数の和:813

約数の個数: 32

約数和(自身を含む): 30331392

約数和(自身を除く): 10153507

約数列:

[1, 5, 7, 13, 35, 61, 65, 91, 305, 427, 455, 727, 793, 2135, 3635, 3965, 5089, 5551, 9451, 25445, 27755, 44347, 47255, 66157, 221735, 310429, 330785, 576511, 1552145, 2882555, 4035577, 20177885]

約数ペア:

[(1, 20177885), (5, 4035577), (7, 2882555), (13, 1552145), (35, 576511), (61, 330785), (65, 310429), (91, 221735), (305, 66157), (427, 47255), (455, 44347), (727, 27755), (793, 25445), (2135, 9451), (3635, 5551), (3965, 5089)]