21374899

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 28619136

約数和(自身を除く): 7244237

約数列:

[1, 7, 13, 17, 41, 91, 119, 221, 287, 337, 533, 697, 1547, 2359, 3731, 4381, 4879, 5729, 9061, 13817, 30667, 40103, 63427, 74477, 96719, 179621, 234889, 521339, 1257347, 1644223, 3053557, 21374899]

約数ペア:

[(1, 21374899), (7, 3053557), (13, 1644223), (17, 1257347), (41, 521339), (91, 234889), (119, 179621), (221, 96719), (287, 74477), (337, 63427), (533, 40103), (697, 30667), (1547, 13817), (2359, 9061), (3731, 5729), (4381, 4879)]