21109436

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{239}}^1\times {\mathrm{311}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 37739520

約数和(自身を除く): 16630084

約数列:

[1, 2, 4, 71, 142, 239, 284, 311, 478, 622, 956, 1244, 16969, 22081, 33938, 44162, 67876, 74329, 88324, 148658, 297316, 5277359, 10554718, 21109436]

約数ペア:

[(1, 21109436), (2, 10554718), (4, 5277359), (71, 297316), (142, 148658), (239, 88324), (284, 74329), (311, 67876), (478, 44162), (622, 33938), (956, 22081), (1244, 16969)]