21301816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156631}}^1$

素因数の和:156654

約数の個数: 16

約数和(自身を含む): 42290640

約数和(自身を除く): 20988824

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156631, 313262, 626524, 1253048, 2662727, 5325454, 10650908, 21301816]

約数ペア:

[(1, 21301816), (2, 10650908), (4, 5325454), (8, 2662727), (17, 1253048), (34, 626524), (68, 313262), (136, 156631)]