21906640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{39119}}^1$

素因数の和:39139

約数の個数: 40

約数和(自身を含む): 58210560

約数和(自身を除く): 36303920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 39119, 78238, 156476, 195595, 273833, 312952, 391190, 547666, 625904, 782380, 1095332, 1369165, 1564760, 2190664, 2738330, 3129520, 4381328, 5476660, 10953320, 21906640]

約数ペア:

[(1, 21906640), (2, 10953320), (4, 5476660), (5, 4381328), (7, 3129520), (8, 2738330), (10, 2190664), (14, 1564760), (16, 1369165), (20, 1095332), (28, 782380), (35, 625904), (40, 547666), (56, 391190), (70, 312952), (80, 273833), (112, 195595), (140, 156476), (280, 78238), (560, 39119)]