21000950278

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19481401}}^1$

素因数の和:19481428

約数の個数: 24

約数和(自身を含む): 39975836904

約数和(自身を除く): 18974886626

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19481401, 38962802, 136369807, 214295411, 272739614, 428590822, 954588649, 1500067877, 1909177298, 3000135754, 10500475139, 21000950278]

約数ペア:

[(1, 21000950278), (2, 10500475139), (7, 3000135754), (11, 1909177298), (14, 1500067877), (22, 954588649), (49, 428590822), (77, 272739614), (98, 214295411), (154, 136369807), (539, 38962802), (1078, 19481401)]