21809018

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{20231}}^1$

素因数の和:20258

約数の個数: 24

約数和(自身を含む): 41516064

約数和(自身を除く): 19707046

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 20231, 40462, 141617, 222541, 283234, 445082, 991319, 1557787, 1982638, 3115574, 10904509, 21809018]

約数ペア:

[(1, 21809018), (2, 10904509), (7, 3115574), (11, 1982638), (14, 1557787), (22, 991319), (49, 445082), (77, 283234), (98, 222541), (154, 141617), (539, 40462), (1078, 20231)]