21885100

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{2459}}^1$

素因数の和:2562

約数の個数: 36

約数和(自身を含む): 48043800

約数和(自身を除く): 26158700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 2459, 4450, 4918, 8900, 9836, 12295, 24590, 49180, 61475, 122950, 218851, 245900, 437702, 875404, 1094255, 2188510, 4377020, 5471275, 10942550, 21885100]

約数ペア:

[(1, 21885100), (2, 10942550), (4, 5471275), (5, 4377020), (10, 2188510), (20, 1094255), (25, 875404), (50, 437702), (89, 245900), (100, 218851), (178, 122950), (356, 61475), (445, 49180), (890, 24590), (1780, 12295), (2225, 9836), (2459, 8900), (4450, 4918)]