20990515

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{46133}}^1$

素因数の和:46158

約数の個数: 16

約数和(自身を含む): 31002048

約数和(自身を除く): 10011533

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 46133, 230665, 322931, 599729, 1614655, 2998645, 4198103, 20990515]

約数ペア:

[(1, 20990515), (5, 4198103), (7, 2998645), (13, 1614655), (35, 599729), (65, 322931), (91, 230665), (455, 46133)]