21116956

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17539}}^1$

素因数の和:17593

約数の個数: 24

約数和(自身を含む): 43218560

約数和(自身を除く): 22101604

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17539, 35078, 70156, 122773, 245546, 491092, 754177, 1508354, 3016708, 5279239, 10558478, 21116956]

約数ペア:

[(1, 21116956), (2, 10558478), (4, 5279239), (7, 3016708), (14, 1508354), (28, 754177), (43, 491092), (86, 245546), (172, 122773), (301, 70156), (602, 35078), (1204, 17539)]