28381405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{11801}}^1$

素因数の和:11856

約数の個数: 16

約数和(自身を含む): 37671984

約数和(自身を除く): 9290579

約数列:

[1, 5, 13, 37, 65, 185, 481, 2405, 11801, 59005, 153413, 436637, 767065, 2183185, 5676281, 28381405]

約数ペア:

[(1, 28381405), (5, 5676281), (13, 2183185), (37, 767065), (65, 436637), (185, 153413), (481, 59005), (2405, 11801)]