21181618

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{17981}}^1$

素因数の和:18033

約数の個数: 16

約数和(自身を含む): 34525440

約数和(自身を除く): 13343822

約数列:

[1, 2, 19, 31, 38, 62, 589, 1178, 17981, 35962, 341639, 557411, 683278, 1114822, 10590809, 21181618]

約数ペア:

[(1, 21181618), (2, 10590809), (19, 1114822), (31, 683278), (38, 557411), (62, 341639), (589, 35962), (1178, 17981)]