19895967

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1429}}^1$

素因数の和:1472

約数の個数: 48

約数和(自身を含む): 37477440

約数和(自身を除く): 17581473

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 221, 273, 357, 663, 819, 1071, 1429, 1547, 1989, 4287, 4641, 10003, 12861, 13923, 18577, 24293, 30009, 55731, 72879, 90027, 130039, 167193, 170051, 218637, 315809, 390117, 510153, 947427, 1170351, 1530459, 2210663, 2842281, 6631989, 19895967]

約数ペア:

[(1, 19895967), (3, 6631989), (7, 2842281), (9, 2210663), (13, 1530459), (17, 1170351), (21, 947427), (39, 510153), (51, 390117), (63, 315809), (91, 218637), (117, 170051), (119, 167193), (153, 130039), (221, 90027), (273, 72879), (357, 55731), (663, 30009), (819, 24293), (1071, 18577), (1429, 13923), (1547, 12861), (1989, 10003), (4287, 4641)]