20017768

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{151}}^1\times {\mathrm{227}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 38468160

約数和(自身を除く): 18450392

約数列:

[1, 2, 4, 8, 73, 146, 151, 227, 292, 302, 454, 584, 604, 908, 1208, 1816, 11023, 16571, 22046, 33142, 34277, 44092, 66284, 68554, 88184, 132568, 137108, 274216, 2502221, 5004442, 10008884, 20017768]

約数ペア:

[(1, 20017768), (2, 10008884), (4, 5004442), (8, 2502221), (73, 274216), (146, 137108), (151, 132568), (227, 88184), (292, 68554), (302, 66284), (454, 44092), (584, 34277), (604, 33142), (908, 22046), (1208, 16571), (1816, 11023)]