21228156

素因数分解:

$2^2\times 3^4\times {\mathrm{65519}}^1$

素因数の和:65535

約数の個数: 30

約数和(自身を含む): 55495440

約数和(自身を除く): 34267284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324, 65519, 131038, 196557, 262076, 393114, 589671, 786228, 1179342, 1769013, 2358684, 3538026, 5307039, 7076052, 10614078, 21228156]

約数ペア:

[(1, 21228156), (2, 10614078), (3, 7076052), (4, 5307039), (6, 3538026), (9, 2358684), (12, 1769013), (18, 1179342), (27, 786228), (36, 589671), (54, 393114), (81, 262076), (108, 196557), (162, 131038), (324, 65519)]