18085640

素因数分解:

$2^3\times 5^1\times {\mathrm{347}}^1\times {\mathrm{1303}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 40841280

約数和(自身を除く): 22755640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1303, 1388, 1735, 2606, 2776, 3470, 5212, 6515, 6940, 10424, 13030, 13880, 26060, 52120, 452141, 904282, 1808564, 2260705, 3617128, 4521410, 9042820, 18085640]

約数ペア:

[(1, 18085640), (2, 9042820), (4, 4521410), (5, 3617128), (8, 2260705), (10, 1808564), (20, 904282), (40, 452141), (347, 52120), (694, 26060), (1303, 13880), (1388, 13030), (1735, 10424), (2606, 6940), (2776, 6515), (3470, 5212)]