21504040

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{877}}^1$

素因数の和:1501

約数の個数: 32

約数和(自身を含む): 48518280

約数和(自身を除く): 27014240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 877, 1226, 1754, 2452, 3065, 3508, 4385, 4904, 6130, 7016, 8770, 12260, 17540, 24520, 35080, 537601, 1075202, 2150404, 2688005, 4300808, 5376010, 10752020, 21504040]

約数ペア:

[(1, 21504040), (2, 10752020), (4, 5376010), (5, 4300808), (8, 2688005), (10, 2150404), (20, 1075202), (40, 537601), (613, 35080), (877, 24520), (1226, 17540), (1754, 12260), (2452, 8770), (3065, 7016), (3508, 6130), (4385, 4904)]