19926405

素因数分解:

$3^4\times 5^1\times {\mathrm{49201}}^1$

素因数の和:49218

約数の個数: 20

約数和(自身を含む): 35720652

約数和(自身を除く): 15794247

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 49201, 147603, 246005, 442809, 738015, 1328427, 2214045, 3985281, 6642135, 19926405]

約数ペア:

[(1, 19926405), (3, 6642135), (5, 3985281), (9, 2214045), (15, 1328427), (27, 738015), (45, 442809), (81, 246005), (135, 147603), (405, 49201)]