81659408

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{118691}}^1$

素因数の和:118742

約数の個数: 20

約数和(自身を含む): 161895888

約数和(自身を除く): 80236480

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 118691, 237382, 474764, 949528, 1899056, 5103713, 10207426, 20414852, 40829704, 81659408]

約数ペア:

[(1, 81659408), (2, 40829704), (4, 20414852), (8, 10207426), (16, 5103713), (43, 1899056), (86, 949528), (172, 474764), (344, 237382), (688, 118691)]