78431984

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{158129}}^1$

素因数の和:158168

約数の個数: 20

約数和(自身を含む): 156864960

約数和(自身を除く): 78432976

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 158129, 316258, 632516, 1265032, 2530064, 4901999, 9803998, 19607996, 39215992, 78431984]

約数ペア:

[(1, 78431984), (2, 39215992), (4, 19607996), (8, 9803998), (16, 4901999), (31, 2530064), (62, 1265032), (124, 632516), (248, 316258), (496, 158129)]