28789870

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{21977}}^1$

素因数の和:22115

約数の個数: 16

約数和(自身を含む): 52219728

約数和(自身を除く): 23429858

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 21977, 43954, 109885, 219770, 2878987, 5757974, 14394935, 28789870]

約数ペア:

[(1, 28789870), (2, 14394935), (5, 5757974), (10, 2878987), (131, 219770), (262, 109885), (655, 43954), (1310, 21977)]