56781328

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{82531}}^1$

素因数の和:82582

約数の個数: 20

約数和(自身を含む): 112573648

約数和(自身を除く): 55792320

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 82531, 165062, 330124, 660248, 1320496, 3548833, 7097666, 14195332, 28390664, 56781328]

約数ペア:

[(1, 56781328), (2, 28390664), (4, 14195332), (8, 7097666), (16, 3548833), (43, 1320496), (86, 660248), (172, 330124), (344, 165062), (688, 82531)]