21921255

素因数分解:

$3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2917}}^1$

素因数の和:3095

約数の個数: 24

約数和(自身を含む): 38237472

約数和(自身を除く): 16316217

約数列:

[1, 3, 5, 9, 15, 45, 167, 501, 835, 1503, 2505, 2917, 7515, 8751, 14585, 26253, 43755, 131265, 487139, 1461417, 2435695, 4384251, 7307085, 21921255]

約数ペア:

[(1, 21921255), (3, 7307085), (5, 4384251), (9, 2435695), (15, 1461417), (45, 487139), (167, 131265), (501, 43755), (835, 26253), (1503, 14585), (2505, 8751), (2917, 7515)]