21578997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{389}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 32254560

約数和(自身を除く): 10675563

約数列:

[1, 3, 11, 33, 41, 123, 389, 451, 1167, 1353, 1681, 4279, 5043, 12837, 15949, 18491, 47847, 55473, 175439, 526317, 653909, 1961727, 7192999, 21578997]

約数ペア:

[(1, 21578997), (3, 7192999), (11, 1961727), (33, 653909), (41, 526317), (123, 175439), (389, 55473), (451, 47847), (1167, 18491), (1353, 15949), (1681, 12837), (4279, 5043)]