165885640

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{4271}}^1$

素因数の和:5253

約数の個数: 32

約数和(自身を含む): 373714560

約数和(自身を除く): 207828920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1942, 3884, 4271, 4855, 7768, 8542, 9710, 17084, 19420, 21355, 34168, 38840, 42710, 85420, 170840, 4147141, 8294282, 16588564, 20735705, 33177128, 41471410, 82942820, 165885640]

約数ペア:

[(1, 165885640), (2, 82942820), (4, 41471410), (5, 33177128), (8, 20735705), (10, 16588564), (20, 8294282), (40, 4147141), (971, 170840), (1942, 85420), (3884, 42710), (4271, 38840), (4855, 34168), (7768, 21355), (8542, 19420), (9710, 17084)]