21858207

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:583

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 12978273

約数列:

[1, 3, 7, 21, 41, 53, 123, 159, 287, 371, 479, 861, 1113, 1437, 2173, 3353, 6519, 10059, 15211, 19639, 25387, 45633, 58917, 76161, 137473, 177709, 412419, 533127, 1040867, 3122601, 7286069, 21858207]

約数ペア:

[(1, 21858207), (3, 7286069), (7, 3122601), (21, 1040867), (41, 533127), (53, 412419), (123, 177709), (159, 137473), (287, 76161), (371, 58917), (479, 45633), (861, 25387), (1113, 19639), (1437, 15211), (2173, 10059), (3353, 6519)]