21579628

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{11503}}^1$

素因数の和:11581

約数の個数: 24

約数和(自身を含む): 43807232

約数和(自身を除く): 22227604

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 11503, 23006, 46012, 80521, 161042, 322084, 770701, 1541402, 3082804, 5394907, 10789814, 21579628]

約数ペア:

[(1, 21579628), (2, 10789814), (4, 5394907), (7, 3082804), (14, 1541402), (28, 770701), (67, 322084), (134, 161042), (268, 80521), (469, 46012), (938, 23006), (1876, 11503)]