21858515

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{2161}}^1$

素因数の和:2207

約数の個数: 24

約数和(自身を含む): 31859232

約数和(自身を除く): 10000717

約数列:

[1, 5, 7, 17, 35, 85, 119, 289, 595, 1445, 2023, 2161, 10115, 10805, 15127, 36737, 75635, 183685, 257159, 624529, 1285795, 3122645, 4371703, 21858515]

約数ペア:

[(1, 21858515), (5, 4371703), (7, 3122645), (17, 1285795), (35, 624529), (85, 257159), (119, 183685), (289, 75635), (595, 36737), (1445, 15127), (2023, 10805), (2161, 10115)]