2580440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2081}}^1$

素因数の和:2123

約数の個数: 32

約数和(自身を含む): 5996160

約数和(自身を除く): 3415720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 2081, 4162, 8324, 10405, 16648, 20810, 41620, 64511, 83240, 129022, 258044, 322555, 516088, 645110, 1290220, 2580440]

約数ペア:

[(1, 2580440), (2, 1290220), (4, 645110), (5, 516088), (8, 322555), (10, 258044), (20, 129022), (31, 83240), (40, 64511), (62, 41620), (124, 20810), (155, 16648), (248, 10405), (310, 8324), (620, 4162), (1240, 2081)]