209371071

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{331}}^2$

素因数の和:692

約数の個数: 36

約数和(自身を含む): 350778456

約数和(自身を除く): 141407385

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 331, 637, 993, 1911, 2317, 4303, 6951, 12909, 16219, 30121, 48657, 90363, 109561, 210847, 328683, 632541, 766927, 1424293, 2300781, 4272879, 5368489, 9970051, 16105467, 29910153, 69790357, 209371071]

約数ペア:

[(1, 209371071), (3, 69790357), (7, 29910153), (13, 16105467), (21, 9970051), (39, 5368489), (49, 4272879), (91, 2300781), (147, 1424293), (273, 766927), (331, 632541), (637, 328683), (993, 210847), (1911, 109561), (2317, 90363), (4303, 48657), (6951, 30121), (12909, 16219)]