20811973

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12037}}^1$

素因数の和:12076

約数の個数: 16

約数和(自身を含む): 26965120

約数和(自身を除く): 6153147

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12037, 84259, 156481, 228703, 1095367, 1600921, 2973139, 20811973]

約数ペア:

[(1, 20811973), (7, 2973139), (13, 1600921), (19, 1095367), (91, 228703), (133, 156481), (247, 84259), (1729, 12037)]