21000369719

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2775257}}^1$

素因数の和:2775334

約数の個数: 16

約数和(自身を含む): 25576777728

約数和(自身を除く): 4576408009

約数列:

[1, 7, 23, 47, 161, 329, 1081, 7567, 2775257, 19426799, 63830911, 130437079, 446816377, 913059553, 3000052817, 21000369719]

約数ペア:

[(1, 21000369719), (7, 3000052817), (23, 913059553), (47, 446816377), (161, 130437079), (329, 63830911), (1081, 19426799), (7567, 2775257)]