21400323

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{463}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 34209792

約数和(自身を除く): 12809469

約数列:

[1, 3, 7, 21, 31, 71, 93, 213, 217, 463, 497, 651, 1389, 1491, 2201, 3241, 6603, 9723, 14353, 15407, 32873, 43059, 46221, 98619, 100471, 230111, 301413, 690333, 1019063, 3057189, 7133441, 21400323]

約数ペア:

[(1, 21400323), (3, 7133441), (7, 3057189), (21, 1019063), (31, 690333), (71, 301413), (93, 230111), (213, 100471), (217, 98619), (463, 46221), (497, 43059), (651, 32873), (1389, 15407), (1491, 14353), (2201, 9723), (3241, 6603)]