19877405

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{1361}}^1$

素因数の和:1516

約数の個数: 16

約数和(自身を含む): 25104384

約数和(自身を除く): 5226979

約数列:

[1, 5, 23, 115, 127, 635, 1361, 2921, 6805, 14605, 31303, 156515, 172847, 864235, 3975481, 19877405]

約数ペア:

[(1, 19877405), (5, 3975481), (23, 864235), (115, 172847), (127, 156515), (635, 31303), (1361, 14605), (2921, 6805)]