19972480

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2837}}^1$

素因数の和:2867

約数の個数: 64

約数和(自身を含む): 52105680

約数和(自身を除く): 32133200

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 2837, 3520, 5674, 7040, 11348, 14185, 22696, 28370, 31207, 45392, 56740, 62414, 90784, 113480, 124828, 156035, 181568, 226960, 249656, 312070, 363136, 453920, 499312, 624140, 907840, 998624, 1248280, 1815680, 1997248, 2496560, 3994496, 4993120, 9986240, 19972480]

約数ペア:

[(1, 19972480), (2, 9986240), (4, 4993120), (5, 3994496), (8, 2496560), (10, 1997248), (11, 1815680), (16, 1248280), (20, 998624), (22, 907840), (32, 624140), (40, 499312), (44, 453920), (55, 363136), (64, 312070), (80, 249656), (88, 226960), (110, 181568), (128, 156035), (160, 124828), (176, 113480), (220, 90784), (320, 62414), (352, 56740), (440, 45392), (640, 31207), (704, 28370), (880, 22696), (1408, 14185), (1760, 11348), (2837, 7040), (3520, 5674)]