20280239

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1097}}^1$

素因数の和:1262

約数の個数: 16

約数和(自身を含む): 24595200

約数和(自身を除く): 4314961

約数列:

[1, 7, 19, 133, 139, 973, 1097, 2641, 7679, 18487, 20843, 145901, 152483, 1067381, 2897177, 20280239]

約数ペア:

[(1, 20280239), (7, 2897177), (19, 1067381), (133, 152483), (139, 145901), (973, 20843), (1097, 18487), (2641, 7679)]