20670237

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 35642880

約数和(自身を除く): 14972643

約数列:

[1, 3, 7, 9, 21, 59, 63, 67, 83, 177, 201, 249, 413, 469, 531, 581, 603, 747, 1239, 1407, 1743, 3717, 3953, 4221, 4897, 5229, 5561, 11859, 14691, 16683, 27671, 34279, 35577, 38927, 44073, 50049, 83013, 102837, 116781, 249039, 308511, 328099, 350343, 984297, 2296693, 2952891, 6890079, 20670237]

約数ペア:

[(1, 20670237), (3, 6890079), (7, 2952891), (9, 2296693), (21, 984297), (59, 350343), (63, 328099), (67, 308511), (83, 249039), (177, 116781), (201, 102837), (249, 83013), (413, 50049), (469, 44073), (531, 38927), (581, 35577), (603, 34279), (747, 27671), (1239, 16683), (1407, 14691), (1743, 11859), (3717, 5561), (3953, 5229), (4221, 4897)]