20197874

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:374

約数の個数: 32

約数和(自身を含む): 33454080

約数和(自身を除く): 13256206

約数列:

[1, 2, 19, 38, 43, 47, 86, 94, 263, 526, 817, 893, 1634, 1786, 2021, 4042, 4997, 9994, 11309, 12361, 22618, 24722, 38399, 76798, 214871, 234859, 429742, 469718, 531523, 1063046, 10098937, 20197874]

約数ペア:

[(1, 20197874), (2, 10098937), (19, 1063046), (38, 531523), (43, 469718), (47, 429742), (86, 234859), (94, 214871), (263, 76798), (526, 38399), (817, 24722), (893, 22618), (1634, 12361), (1786, 11309), (2021, 9994), (4042, 4997)]