80766640

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{5231}}^1$

素因数の和:5437

約数の個数: 40

約数和(自身を含む): 188791488

約数和(自身を除く): 108024848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1544, 1930, 3088, 3860, 5231, 7720, 10462, 15440, 20924, 26155, 41848, 52310, 83696, 104620, 209240, 418480, 1009583, 2019166, 4038332, 5047915, 8076664, 10095830, 16153328, 20191660, 40383320, 80766640]

約数ペア:

[(1, 80766640), (2, 40383320), (4, 20191660), (5, 16153328), (8, 10095830), (10, 8076664), (16, 5047915), (20, 4038332), (40, 2019166), (80, 1009583), (193, 418480), (386, 209240), (772, 104620), (965, 83696), (1544, 52310), (1930, 41848), (3088, 26155), (3860, 20924), (5231, 15440), (7720, 10462)]