20121283

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5393}}^1$

素因数の和:5454

約数の個数: 16

約数和(自身を含む): 25373376

約数和(自身を除く): 5252093

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5393, 37751, 70109, 221113, 490763, 1547791, 2874469, 20121283]

約数ペア:

[(1, 20121283), (7, 2874469), (13, 1547791), (41, 490763), (91, 221113), (287, 70109), (533, 37751), (3731, 5393)]