21223741

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 28339200

約数和(自身を除く): 7115459

約数列:

[1, 7, 11, 19, 77, 89, 133, 163, 209, 623, 979, 1141, 1463, 1691, 1793, 3097, 6853, 11837, 12551, 14507, 18601, 21679, 34067, 101549, 130207, 159577, 238469, 275633, 1117039, 1929431, 3031963, 21223741]

約数ペア:

[(1, 21223741), (7, 3031963), (11, 1929431), (19, 1117039), (77, 275633), (89, 238469), (133, 159577), (163, 130207), (209, 101549), (623, 34067), (979, 21679), (1141, 18601), (1463, 14507), (1691, 12551), (1793, 11837), (3097, 6853)]