81876790

素因数分解:

$2^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{19541}}^1$

素因数の和:19967

約数の個数: 16

約数和(自身を含む): 147737520

約数和(自身を除く): 65860730

約数列:

[1, 2, 5, 10, 419, 838, 2095, 4190, 19541, 39082, 97705, 195410, 8187679, 16375358, 40938395, 81876790]

約数ペア:

[(1, 81876790), (2, 40938395), (5, 16375358), (10, 8187679), (419, 195410), (838, 97705), (2095, 39082), (4190, 19541)]