20192800

素因数分解:

$2^5\times 5^2\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:650

約数の個数: 72

約数和(自身を含む): 50528016

約数和(自身を除く): 30335216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 80, 86, 100, 160, 172, 200, 215, 344, 400, 430, 587, 688, 800, 860, 1075, 1174, 1376, 1720, 2150, 2348, 2935, 3440, 4300, 4696, 5870, 6880, 8600, 9392, 11740, 14675, 17200, 18784, 23480, 25241, 29350, 34400, 46960, 50482, 58700, 93920, 100964, 117400, 126205, 201928, 234800, 252410, 403856, 469600, 504820, 631025, 807712, 1009640, 1262050, 2019280, 2524100, 4038560, 5048200, 10096400, 20192800]

約数ペア:

[(1, 20192800), (2, 10096400), (4, 5048200), (5, 4038560), (8, 2524100), (10, 2019280), (16, 1262050), (20, 1009640), (25, 807712), (32, 631025), (40, 504820), (43, 469600), (50, 403856), (80, 252410), (86, 234800), (100, 201928), (160, 126205), (172, 117400), (200, 100964), (215, 93920), (344, 58700), (400, 50482), (430, 46960), (587, 34400), (688, 29350), (800, 25241), (860, 23480), (1075, 18784), (1174, 17200), (1376, 14675), (1720, 11740), (2150, 9392), (2348, 8600), (2935, 6880), (3440, 5870), (4300, 4696)]