20112440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^2\times {\mathrm{179}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 46380600

約数和(自身を除く): 26268160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 179, 212, 265, 358, 424, 530, 716, 895, 1060, 1432, 1790, 2120, 2809, 3580, 5618, 7160, 9487, 11236, 14045, 18974, 22472, 28090, 37948, 47435, 56180, 75896, 94870, 112360, 189740, 379480, 502811, 1005622, 2011244, 2514055, 4022488, 5028110, 10056220, 20112440]

約数ペア:

[(1, 20112440), (2, 10056220), (4, 5028110), (5, 4022488), (8, 2514055), (10, 2011244), (20, 1005622), (40, 502811), (53, 379480), (106, 189740), (179, 112360), (212, 94870), (265, 75896), (358, 56180), (424, 47435), (530, 37948), (716, 28090), (895, 22472), (1060, 18974), (1432, 14045), (1790, 11236), (2120, 9487), (2809, 7160), (3580, 5618)]