20686876

素因数分解:

$2^2\times 7^1\times {\mathrm{397}}^1\times {\mathrm{1861}}^1$

素因数の和:2269

約数の個数: 24

約数和(自身を含む): 41500256

約数和(自身を除く): 20813380

約数列:

[1, 2, 4, 7, 14, 28, 397, 794, 1588, 1861, 2779, 3722, 5558, 7444, 11116, 13027, 26054, 52108, 738817, 1477634, 2955268, 5171719, 10343438, 20686876]

約数ペア:

[(1, 20686876), (2, 10343438), (4, 5171719), (7, 2955268), (14, 1477634), (28, 738817), (397, 52108), (794, 26054), (1588, 13027), (1861, 11116), (2779, 7444), (3722, 5558)]