18314420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10289}}^1$

素因数の和:10387

約数の個数: 24

約数和(自身を含む): 38896200

約数和(自身を除く): 20581780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10289, 20578, 41156, 51445, 102890, 205780, 915721, 1831442, 3662884, 4578605, 9157210, 18314420]

約数ペア:

[(1, 18314420), (2, 9157210), (4, 4578605), (5, 3662884), (10, 1831442), (20, 915721), (89, 205780), (178, 102890), (356, 51445), (445, 41156), (890, 20578), (1780, 10289)]