39996820

素因数分解:

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

素因数の和:2152

約数の個数: 36

約数和(自身を含む): 86831892

約数和(自身を除く): 46835072

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1922, 2081, 3844, 4162, 4805, 8324, 9610, 10405, 19220, 20810, 41620, 64511, 129022, 258044, 322555, 645110, 1290220, 1999841, 3999682, 7999364, 9999205, 19998410, 39996820]

約数ペア:

[(1, 39996820), (2, 19998410), (4, 9999205), (5, 7999364), (10, 3999682), (20, 1999841), (31, 1290220), (62, 645110), (124, 322555), (155, 258044), (310, 129022), (620, 64511), (961, 41620), (1922, 20810), (2081, 19220), (3844, 10405), (4162, 9610), (4805, 8324)]