21226952

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{359}}^1\times {\mathrm{389}}^1$

素因数の和:773

約数の個数: 32

約数和(自身を含む): 42120000

約数和(自身を除く): 20893048

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 359, 389, 718, 778, 1436, 1556, 2872, 3112, 6821, 7391, 13642, 14782, 27284, 29564, 54568, 59128, 139651, 279302, 558604, 1117208, 2653369, 5306738, 10613476, 21226952]

約数ペア:

[(1, 21226952), (2, 10613476), (4, 5306738), (8, 2653369), (19, 1117208), (38, 558604), (76, 279302), (152, 139651), (359, 59128), (389, 54568), (718, 29564), (778, 27284), (1436, 14782), (1556, 13642), (2872, 7391), (3112, 6821)]