21664012

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{179}}^1\times {\mathrm{383}}^1$

素因数の和:645

約数の個数: 24

約数和(自身を含む): 38707200

約数和(自身を除く): 17043188

約数列:

[1, 2, 4, 79, 158, 179, 316, 358, 383, 716, 766, 1532, 14141, 28282, 30257, 56564, 60514, 68557, 121028, 137114, 274228, 5416003, 10832006, 21664012]

約数ペア:

[(1, 21664012), (2, 10832006), (4, 5416003), (79, 274228), (158, 137114), (179, 121028), (316, 68557), (358, 60514), (383, 56564), (716, 30257), (766, 28282), (1532, 14141)]