20897200

素因数分解:

$2^4\times 5^2\times {\mathrm{89}}^1\times {\mathrm{587}}^1$

素因数の和:694

約数の個数: 60

約数和(自身を含む): 50856120

約数和(自身を除く): 29958920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 89, 100, 178, 200, 356, 400, 445, 587, 712, 890, 1174, 1424, 1780, 2225, 2348, 2935, 3560, 4450, 4696, 5870, 7120, 8900, 9392, 11740, 14675, 17800, 23480, 29350, 35600, 46960, 52243, 58700, 104486, 117400, 208972, 234800, 261215, 417944, 522430, 835888, 1044860, 1306075, 2089720, 2612150, 4179440, 5224300, 10448600, 20897200]

約数ペア:

[(1, 20897200), (2, 10448600), (4, 5224300), (5, 4179440), (8, 2612150), (10, 2089720), (16, 1306075), (20, 1044860), (25, 835888), (40, 522430), (50, 417944), (80, 261215), (89, 234800), (100, 208972), (178, 117400), (200, 104486), (356, 58700), (400, 52243), (445, 46960), (587, 35600), (712, 29350), (890, 23480), (1174, 17800), (1424, 14675), (1780, 11740), (2225, 9392), (2348, 8900), (2935, 7120), (3560, 5870), (4450, 4696)]