21123160

素因数分解:

$2^3\times 5^1\times {\mathrm{337}}^1\times {\mathrm{1567}}^1$

素因数の和:1915

約数の個数: 32

約数和(自身を含む): 47698560

約数和(自身を除く): 26575400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 337, 674, 1348, 1567, 1685, 2696, 3134, 3370, 6268, 6740, 7835, 12536, 13480, 15670, 31340, 62680, 528079, 1056158, 2112316, 2640395, 4224632, 5280790, 10561580, 21123160]

約数ペア:

[(1, 21123160), (2, 10561580), (4, 5280790), (5, 4224632), (8, 2640395), (10, 2112316), (20, 1056158), (40, 528079), (337, 62680), (674, 31340), (1348, 15670), (1567, 13480), (1685, 12536), (2696, 7835), (3134, 6740), (3370, 6268)]