19988242

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:294

約数の個数: 32

約数和(自身を含む): 32845824

約数和(自身を除く): 12857582

約数列:

[1, 2, 23, 31, 46, 62, 107, 131, 214, 262, 713, 1426, 2461, 3013, 3317, 4061, 4922, 6026, 6634, 8122, 14017, 28034, 76291, 93403, 152582, 186806, 322391, 434527, 644782, 869054, 9994121, 19988242]

約数ペア:

[(1, 19988242), (2, 9994121), (23, 869054), (31, 644782), (46, 434527), (62, 322391), (107, 186806), (131, 152582), (214, 93403), (262, 76291), (713, 28034), (1426, 14017), (2461, 8122), (3013, 6634), (3317, 6026), (4061, 4922)]