19896597

素因数分解:

$3^6\times 7^2\times {\mathrm{557}}^1$

素因数の和:589

約数の個数: 42

約数和(自身を含む): 34763958

約数和(自身を除く): 14867361

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 557, 567, 729, 1323, 1671, 1701, 3899, 3969, 5013, 5103, 11697, 11907, 15039, 27293, 35091, 35721, 45117, 81879, 105273, 135351, 245637, 315819, 406053, 736911, 947457, 2210733, 2842371, 6632199, 19896597]

約数ペア:

[(1, 19896597), (3, 6632199), (7, 2842371), (9, 2210733), (21, 947457), (27, 736911), (49, 406053), (63, 315819), (81, 245637), (147, 135351), (189, 105273), (243, 81879), (441, 45117), (557, 35721), (567, 35091), (729, 27293), (1323, 15039), (1671, 11907), (1701, 11697), (3899, 5103), (3969, 5013)]