20151861

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{1091}}^1$

素因数の和:1272

約数の個数: 16

約数和(自身を含む): 27675648

約数和(自身を除く): 7523787

約数列:

[1, 3, 47, 131, 141, 393, 1091, 3273, 6157, 18471, 51277, 142921, 153831, 428763, 6717287, 20151861]

約数ペア:

[(1, 20151861), (3, 6717287), (47, 428763), (131, 153831), (141, 142921), (393, 51277), (1091, 18471), (3273, 6157)]