20463280

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1429}}^1$

素因数の和:1621

約数の個数: 40

約数和(自身を含む): 47876400

約数和(自身を除く): 27413120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1429, 1432, 1790, 2858, 2864, 3580, 5716, 7145, 7160, 11432, 14290, 14320, 22864, 28580, 57160, 114320, 255791, 511582, 1023164, 1278955, 2046328, 2557910, 4092656, 5115820, 10231640, 20463280]

約数ペア:

[(1, 20463280), (2, 10231640), (4, 5115820), (5, 4092656), (8, 2557910), (10, 2046328), (16, 1278955), (20, 1023164), (40, 511582), (80, 255791), (179, 114320), (358, 57160), (716, 28580), (895, 22864), (1429, 14320), (1432, 14290), (1790, 11432), (2858, 7160), (2864, 7145), (3580, 5716)]