20454145

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{727}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 26103168

約数和(自身を除く): 5649023

約数列:

[1, 5, 17, 85, 331, 727, 1655, 3635, 5627, 12359, 28135, 61795, 240637, 1203185, 4090829, 20454145]

約数ペア:

[(1, 20454145), (5, 4090829), (17, 1203185), (85, 240637), (331, 61795), (727, 28135), (1655, 12359), (3635, 5627)]