20402511

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{1451}}^1$

素因数の和:1606

約数の個数: 16

約数和(自身を含む): 28110720

約数和(自身を除く): 7708209

約数列:

[1, 3, 43, 109, 129, 327, 1451, 4353, 4687, 14061, 62393, 158159, 187179, 474477, 6800837, 20402511]

約数ペア:

[(1, 20402511), (3, 6800837), (43, 474477), (109, 187179), (129, 158159), (327, 62393), (1451, 14061), (4353, 4687)]