21480963

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7691}}^1$

素因数の和:7727

約数の個数: 24

約数和(自身を含む): 35075520

約数和(自身を除く): 13594557

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7691, 23073, 53837, 146129, 161511, 376859, 438387, 1022903, 1130577, 3068709, 7160321, 21480963]

約数ペア:

[(1, 21480963), (3, 7160321), (7, 3068709), (19, 1130577), (21, 1022903), (49, 438387), (57, 376859), (133, 161511), (147, 146129), (399, 53837), (931, 23073), (2793, 7691)]