28693730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{220721}}^1$

素因数の和:220741

約数の個数: 16

約数和(自身を含む): 55621944

約数和(自身を除く): 26928214

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 220721, 441442, 1103605, 2207210, 2869373, 5738746, 14346865, 28693730]

約数ペア:

[(1, 28693730), (2, 14346865), (5, 5738746), (10, 2869373), (13, 2207210), (26, 1103605), (65, 441442), (130, 220721)]