21986604

素因数分解:

$2^2\times 3^2\times {\mathrm{610739}}^1$

素因数の和:610749

約数の個数: 18

約数和(自身を含む): 55577340

約数和(自身を除く): 33590736

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 610739, 1221478, 1832217, 2442956, 3664434, 5496651, 7328868, 10993302, 21986604]

約数ペア:

[(1, 21986604), (2, 10993302), (3, 7328868), (4, 5496651), (6, 3664434), (9, 2442956), (12, 1832217), (18, 1221478), (36, 610739)]