21434609

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:285

約数の個数: 24

約数和(自身を含む): 26178048

約数和(自身を除く): 4743439

約数列:

[1, 7, 31, 49, 103, 137, 217, 721, 959, 1519, 3193, 4247, 5047, 6713, 14111, 22351, 29729, 98777, 156457, 208103, 437441, 691439, 3062087, 21434609]

約数ペア:

[(1, 21434609), (7, 3062087), (31, 691439), (49, 437441), (103, 208103), (137, 156457), (217, 98777), (721, 29729), (959, 22351), (1519, 14111), (3193, 6713), (4247, 5047)]