219028820

素因数分解:

$2^2\times 5^1\times {\mathrm{1571}}^1\times {\mathrm{6971}}^1$

素因数の和:8551

約数の個数: 24

約数和(自身を含む): 460319328

約数和(自身を除く): 241290508

約数列:

[1, 2, 4, 5, 10, 20, 1571, 3142, 6284, 6971, 7855, 13942, 15710, 27884, 31420, 34855, 69710, 139420, 10951441, 21902882, 43805764, 54757205, 109514410, 219028820]

約数ペア:

[(1, 219028820), (2, 109514410), (4, 54757205), (5, 43805764), (10, 21902882), (20, 10951441), (1571, 139420), (3142, 69710), (6284, 34855), (6971, 31420), (7855, 27884), (13942, 15710)]