21342460

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{3967}}^1$

素因数の和:4245

約数の個数: 24

約数和(自身を含む): 44997120

約数和(自身を除く): 23654660

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 3967, 5380, 7934, 15868, 19835, 39670, 79340, 1067123, 2134246, 4268492, 5335615, 10671230, 21342460]

約数ペア:

[(1, 21342460), (2, 10671230), (4, 5335615), (5, 4268492), (10, 2134246), (20, 1067123), (269, 79340), (538, 39670), (1076, 19835), (1345, 15868), (2690, 7934), (3967, 5380)]