18921400

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1063}}^1$

素因数の和:1168

約数の個数: 48

約数和(自身を含む): 44528400

約数和(自身を除く): 25607000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1063, 1780, 2126, 2225, 3560, 4252, 4450, 5315, 8504, 8900, 10630, 17800, 21260, 26575, 42520, 53150, 94607, 106300, 189214, 212600, 378428, 473035, 756856, 946070, 1892140, 2365175, 3784280, 4730350, 9460700, 18921400]

約数ペア:

[(1, 18921400), (2, 9460700), (4, 4730350), (5, 3784280), (8, 2365175), (10, 1892140), (20, 946070), (25, 756856), (40, 473035), (50, 378428), (89, 212600), (100, 189214), (178, 106300), (200, 94607), (356, 53150), (445, 42520), (712, 26575), (890, 21260), (1063, 17800), (1780, 10630), (2126, 8900), (2225, 8504), (3560, 5315), (4252, 4450)]