20125694883

素因数分解:

$3^1\times 7^2\times {\mathrm{643}}^1\times {\mathrm{212923}}^1$

素因数の和:213583

約数の個数: 24

約数和(自身を含む): 31264056768

約数和(自身を除く): 11138361885

約数列:

[1, 3, 7, 21, 49, 147, 643, 1929, 4501, 13503, 31507, 94521, 212923, 638769, 1490461, 4471383, 10433227, 31299681, 136909489, 410728467, 958366423, 2875099269, 6708564961, 20125694883]

約数ペア:

[(1, 20125694883), (3, 6708564961), (7, 2875099269), (21, 958366423), (49, 410728467), (147, 136909489), (643, 31299681), (1929, 10433227), (4501, 4471383), (13503, 1490461), (31507, 638769), (94521, 212923)]