81586640

素因数分解:

$2^4\times 5^1\times {\mathrm{347}}^1\times {\mathrm{2939}}^1$

素因数の和:3299

約数の個数: 40

約数和(自身を含む): 190300320

約数和(自身を除く): 108713680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 347, 694, 1388, 1735, 2776, 2939, 3470, 5552, 5878, 6940, 11756, 13880, 14695, 23512, 27760, 29390, 47024, 58780, 117560, 235120, 1019833, 2039666, 4079332, 5099165, 8158664, 10198330, 16317328, 20396660, 40793320, 81586640]

約数ペア:

[(1, 81586640), (2, 40793320), (4, 20396660), (5, 16317328), (8, 10198330), (10, 8158664), (16, 5099165), (20, 4079332), (40, 2039666), (80, 1019833), (347, 235120), (694, 117560), (1388, 58780), (1735, 47024), (2776, 29390), (2939, 27760), (3470, 23512), (5552, 14695), (5878, 13880), (6940, 11756)]