81291228

素因数分解:

$2^2\times 3^1\times {\mathrm{241}}^1\times {\mathrm{28109}}^1$

素因数の和:28357

約数の個数: 24

約数和(自身を含む): 190473360

約数和(自身を除く): 109182132

約数列:

[1, 2, 3, 4, 6, 12, 241, 482, 723, 964, 1446, 2892, 28109, 56218, 84327, 112436, 168654, 337308, 6774269, 13548538, 20322807, 27097076, 40645614, 81291228]

約数ペア:

[(1, 81291228), (2, 40645614), (3, 27097076), (4, 20322807), (6, 13548538), (12, 6774269), (241, 337308), (482, 168654), (723, 112436), (964, 84327), (1446, 56218), (2892, 28109)]