20958819

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{6199}}^1$

素因数の和:6239

約数の個数: 24

約数和(自身を含む): 33926400

約数和(自身を除く): 12967581

約数列:

[1, 3, 7, 21, 23, 49, 69, 147, 161, 483, 1127, 3381, 6199, 18597, 43393, 130179, 142577, 303751, 427731, 911253, 998039, 2994117, 6986273, 20958819]

約数ペア:

[(1, 20958819), (3, 6986273), (7, 2994117), (21, 998039), (23, 911253), (49, 427731), (69, 303751), (147, 142577), (161, 130179), (483, 43393), (1127, 18597), (3381, 6199)]