28706665

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 39019680

約数和(自身を除く): 10313015

約数列:

[1, 5, 13, 29, 65, 97, 145, 157, 377, 485, 785, 1261, 1885, 2041, 2813, 4553, 6305, 10205, 14065, 15229, 22765, 36569, 59189, 76145, 182845, 197977, 295945, 441641, 989885, 2208205, 5741333, 28706665]

約数ペア:

[(1, 28706665), (5, 5741333), (13, 2208205), (29, 989885), (65, 441641), (97, 295945), (145, 197977), (157, 182845), (377, 76145), (485, 59189), (785, 36569), (1261, 22765), (1885, 15229), (2041, 14065), (2813, 10205), (4553, 6305)]