19977004

素因数分解:

$2^2\times {\mathrm{41}}^2\times {\mathrm{2971}}^1$

素因数の和:3057

約数の個数: 18

約数和(自身を含む): 35845292

約数和(自身を除く): 15868288

約数列:

[1, 2, 4, 41, 82, 164, 1681, 2971, 3362, 5942, 6724, 11884, 121811, 243622, 487244, 4994251, 9988502, 19977004]

約数ペア:

[(1, 19977004), (2, 9988502), (4, 4994251), (41, 487244), (82, 243622), (164, 121811), (1681, 11884), (2971, 6724), (3362, 5942)]