20365821

素因数分解:

$3^2\times 7^2\times {\mathrm{46181}}^1$

素因数の和:46201

約数の個数: 18

約数和(自身を含む): 34220862

約数和(自身を除く): 13855041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 46181, 138543, 323267, 415629, 969801, 2262869, 2909403, 6788607, 20365821]

約数ペア:

[(1, 20365821), (3, 6788607), (7, 2909403), (9, 2262869), (21, 969801), (49, 415629), (63, 323267), (147, 138543), (441, 46181)]