19963420

素因数分解:

$2^2\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1373}}^1$

素因数の和:2109

約数の個数: 24

約数和(自身を含む): 42011424

約数和(自身を除く): 22048004

約数列:

[1, 2, 4, 5, 10, 20, 727, 1373, 1454, 2746, 2908, 3635, 5492, 6865, 7270, 13730, 14540, 27460, 998171, 1996342, 3992684, 4990855, 9981710, 19963420]

約数ペア:

[(1, 19963420), (2, 9981710), (4, 4990855), (5, 3992684), (10, 1996342), (20, 998171), (727, 27460), (1373, 14540), (1454, 13730), (2746, 7270), (2908, 6865), (3635, 5492)]