2640100420

素因数分解:

$2^2\times 5^1\times {\mathrm{2381}}^1\times {\mathrm{55441}}^1$

素因数の和:57831

約数の個数: 24

約数和(自身を含む): 5546639448

約数和(自身を除く): 2906539028

約数列:

[1, 2, 4, 5, 10, 20, 2381, 4762, 9524, 11905, 23810, 47620, 55441, 110882, 221764, 277205, 554410, 1108820, 132005021, 264010042, 528020084, 660025105, 1320050210, 2640100420]

約数ペア:

[(1, 2640100420), (2, 1320050210), (4, 660025105), (5, 528020084), (10, 264010042), (20, 132005021), (2381, 1108820), (4762, 554410), (9524, 277205), (11905, 221764), (23810, 110882), (47620, 55441)]