1339820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2161}}^1$

素因数の和:2201

約数の個数: 24

約数和(自身を含む): 2905728

約数和(自身を除く): 1565908

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 2161, 4322, 8644, 10805, 21610, 43220, 66991, 133982, 267964, 334955, 669910, 1339820]

約数ペア:

[(1, 1339820), (2, 669910), (4, 334955), (5, 267964), (10, 133982), (20, 66991), (31, 43220), (62, 21610), (124, 10805), (155, 8644), (310, 4322), (620, 2161)]