19880458

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{4691}}^1$

素因数の和:4869

約数の個数: 16

約数和(自身を含む): 32318496

約数和(自身を除く): 12438038

約数列:

[1, 2, 13, 26, 163, 326, 2119, 4238, 4691, 9382, 60983, 121966, 764633, 1529266, 9940229, 19880458]

約数ペア:

[(1, 19880458), (2, 9940229), (13, 1529266), (26, 764633), (163, 121966), (326, 60983), (2119, 9382), (4238, 4691)]