21970767

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{11497}}^1$

素因数の和:11527

約数の個数: 24

約数和(自身を含む): 36701616

約数和(自身を除く): 14730849

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 11497, 34491, 80479, 149461, 241437, 448383, 563353, 1046227, 1690059, 3138681, 7323589, 21970767]

約数ペア:

[(1, 21970767), (3, 7323589), (7, 3138681), (13, 1690059), (21, 1046227), (39, 563353), (49, 448383), (91, 241437), (147, 149461), (273, 80479), (637, 34491), (1911, 11497)]