21190472

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1279}}^1$

素因数の和:1413

約数の個数: 32

約数和(自身を含む): 42240000

約数和(自身を除く): 21049528

約数列:

[1, 2, 4, 8, 19, 38, 76, 109, 152, 218, 436, 872, 1279, 2071, 2558, 4142, 5116, 8284, 10232, 16568, 24301, 48602, 97204, 139411, 194408, 278822, 557644, 1115288, 2648809, 5297618, 10595236, 21190472]

約数ペア:

[(1, 21190472), (2, 10595236), (4, 5297618), (8, 2648809), (19, 1115288), (38, 557644), (76, 278822), (109, 194408), (152, 139411), (218, 97204), (436, 48602), (872, 24301), (1279, 16568), (2071, 10232), (2558, 8284), (4142, 5116)]