19974201

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{641}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 31062528

約数和(自身を除く): 11088327

約数列:

[1, 3, 13, 17, 39, 47, 51, 141, 221, 611, 641, 663, 799, 1833, 1923, 2397, 8333, 10387, 10897, 24999, 30127, 31161, 32691, 90381, 141661, 391651, 424983, 512159, 1174953, 1536477, 6658067, 19974201]

約数ペア:

[(1, 19974201), (3, 6658067), (13, 1536477), (17, 1174953), (39, 512159), (47, 424983), (51, 391651), (141, 141661), (221, 90381), (611, 32691), (641, 31161), (663, 30127), (799, 24999), (1833, 10897), (1923, 10387), (2397, 8333)]