21724731

素因数分解:

$3^2\times 7^1\times {\mathrm{419}}^1\times {\mathrm{823}}^1$

素因数の和:1255

約数の個数: 24

約数和(自身を含む): 35992320

約数和(自身を除く): 14267589

約数列:

[1, 3, 7, 9, 21, 63, 419, 823, 1257, 2469, 2933, 3771, 5761, 7407, 8799, 17283, 26397, 51849, 344837, 1034511, 2413859, 3103533, 7241577, 21724731]

約数ペア:

[(1, 21724731), (3, 7241577), (7, 3103533), (9, 2413859), (21, 1034511), (63, 344837), (419, 51849), (823, 26397), (1257, 17283), (2469, 8799), (2933, 7407), (3771, 5761)]