20165904129

素因数分解:

$3^1\times 7^1\times {\mathrm{2207}}^1\times {\mathrm{435107}}^1$

素因数の和:437324

約数の個数: 16

約数和(自身を含む): 30742990848

約数和(自身を除く): 10577086719

約数列:

[1, 3, 7, 21, 2207, 6621, 15449, 46347, 435107, 1305321, 3045749, 9137247, 960281149, 2880843447, 6721968043, 20165904129]

約数ペア:

[(1, 20165904129), (3, 6721968043), (7, 2880843447), (21, 960281149), (2207, 9137247), (6621, 3045749), (15449, 1305321), (46347, 435107)]