18883880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10979}}^1$

素因数の和:11033

約数の個数: 32

約数和(自身を含む): 43480800

約数和(自身を除く): 24596920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10979, 21958, 43916, 54895, 87832, 109790, 219580, 439160, 472097, 944194, 1888388, 2360485, 3776776, 4720970, 9441940, 18883880]

約数ペア:

[(1, 18883880), (2, 9441940), (4, 4720970), (5, 3776776), (8, 2360485), (10, 1888388), (20, 944194), (40, 472097), (43, 439160), (86, 219580), (172, 109790), (215, 87832), (344, 54895), (430, 43916), (860, 21958), (1720, 10979)]