42720223

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{20411}}^1$

素因数の和:20454

約数の個数: 16

約数和(自身を含む): 54867456

約数和(自身を除く): 12147233

約数列:

[1, 7, 13, 23, 91, 161, 299, 2093, 20411, 142877, 265343, 469453, 1857401, 3286171, 6102889, 42720223]

約数ペア:

[(1, 42720223), (7, 6102889), (13, 3286171), (23, 1857401), (91, 469453), (161, 265343), (299, 142877), (2093, 20411)]