21274071

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{523}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 35212800

約数和(自身を除く): 13938729

約数列:

[1, 3, 7, 13, 21, 39, 91, 149, 273, 447, 523, 1043, 1569, 1937, 3129, 3661, 5811, 6799, 10983, 13559, 20397, 40677, 47593, 77927, 142779, 233781, 545489, 1013051, 1636467, 3039153, 7091357, 21274071]

約数ペア:

[(1, 21274071), (3, 7091357), (7, 3039153), (13, 1636467), (21, 1013051), (39, 545489), (91, 233781), (149, 142779), (273, 77927), (447, 47593), (523, 40677), (1043, 20397), (1569, 13559), (1937, 10983), (3129, 6799), (3661, 5811)]