21987446

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{947}}^1$

素因数の和:1028

約数の個数: 32

約数和(自身を含む): 38223360

約数和(自身を除く): 16235914

約数列:

[1, 2, 13, 19, 26, 38, 47, 94, 247, 494, 611, 893, 947, 1222, 1786, 1894, 11609, 12311, 17993, 23218, 24622, 35986, 44509, 89018, 233909, 467818, 578617, 845671, 1157234, 1691342, 10993723, 21987446]

約数ペア:

[(1, 21987446), (2, 10993723), (13, 1691342), (19, 1157234), (26, 845671), (38, 578617), (47, 467818), (94, 233909), (247, 89018), (494, 44509), (611, 35986), (893, 24622), (947, 23218), (1222, 17993), (1786, 12311), (1894, 11609)]