21350217

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 33755904

約数和(自身を除く): 12405687

約数列:

[1, 3, 7, 21, 41, 123, 137, 181, 287, 411, 543, 861, 959, 1267, 2877, 3801, 5617, 7421, 16851, 22263, 24797, 39319, 51947, 74391, 117957, 155841, 173579, 520737, 1016677, 3050031, 7116739, 21350217]

約数ペア:

[(1, 21350217), (3, 7116739), (7, 3050031), (21, 1016677), (41, 520737), (123, 173579), (137, 155841), (181, 117957), (287, 74391), (411, 51947), (543, 39319), (861, 24797), (959, 22263), (1267, 16851), (2877, 7421), (3801, 5617)]