18031400

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1013}}^1$

素因数の和:1118

約数の個数: 48

約数和(自身を含む): 42435900

約数和(自身を除く): 24404500

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1013, 1780, 2026, 2225, 3560, 4052, 4450, 5065, 8104, 8900, 10130, 17800, 20260, 25325, 40520, 50650, 90157, 101300, 180314, 202600, 360628, 450785, 721256, 901570, 1803140, 2253925, 3606280, 4507850, 9015700, 18031400]

約数ペア:

[(1, 18031400), (2, 9015700), (4, 4507850), (5, 3606280), (8, 2253925), (10, 1803140), (20, 901570), (25, 721256), (40, 450785), (50, 360628), (89, 202600), (100, 180314), (178, 101300), (200, 90157), (356, 50650), (445, 40520), (712, 25325), (890, 20260), (1013, 17800), (1780, 10130), (2026, 8900), (2225, 8104), (3560, 5065), (4052, 4450)]