19882600

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1117}}^1$

素因数の和:1222

約数の個数: 48

約数和(自身を含む): 46788300

約数和(自身を除く): 26905700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1117, 1780, 2225, 2234, 3560, 4450, 4468, 5585, 8900, 8936, 11170, 17800, 22340, 27925, 44680, 55850, 99413, 111700, 198826, 223400, 397652, 497065, 795304, 994130, 1988260, 2485325, 3976520, 4970650, 9941300, 19882600]

約数ペア:

[(1, 19882600), (2, 9941300), (4, 4970650), (5, 3976520), (8, 2485325), (10, 1988260), (20, 994130), (25, 795304), (40, 497065), (50, 397652), (89, 223400), (100, 198826), (178, 111700), (200, 99413), (356, 55850), (445, 44680), (712, 27925), (890, 22340), (1117, 17800), (1780, 11170), (2225, 8936), (2234, 8900), (3560, 5585), (4450, 4468)]