639774666

素因数分解:

$2^1\times 3^3\times {\mathrm{571}}^1\times {\mathrm{20749}}^1$

素因数の和:21331

約数の個数: 32

約数和(自身を含む): 1424280000

約数和(自身を除く): 784505334

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 571, 1142, 1713, 3426, 5139, 10278, 15417, 20749, 30834, 41498, 62247, 124494, 186741, 373482, 560223, 1120446, 11847679, 23695358, 35543037, 71086074, 106629111, 213258222, 319887333, 639774666]

約数ペア:

[(1, 639774666), (2, 319887333), (3, 213258222), (6, 106629111), (9, 71086074), (18, 35543037), (27, 23695358), (54, 11847679), (571, 1120446), (1142, 560223), (1713, 373482), (3426, 186741), (5139, 124494), (10278, 62247), (15417, 41498), (20749, 30834)]