21003860

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5867}}^1$

素因数の和:6055

約数の個数: 24

約数和(自身を含む): 44362080

約数和(自身を除く): 23358220

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5867, 11734, 23468, 29335, 58670, 117340, 1050193, 2100386, 4200772, 5250965, 10501930, 21003860]

約数ペア:

[(1, 21003860), (2, 10501930), (4, 5250965), (5, 4200772), (10, 2100386), (20, 1050193), (179, 117340), (358, 58670), (716, 29335), (895, 23468), (1790, 11734), (3580, 5867)]