18991242

素因数分解:

$2^1\times 3^2\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 42424200

約数和(自身を除く): 23432958

約数列:

[1, 2, 3, 6, 9, 18, 73, 97, 146, 149, 194, 219, 291, 298, 438, 447, 582, 657, 873, 894, 1314, 1341, 1746, 2682, 7081, 10877, 14162, 14453, 21243, 21754, 28906, 32631, 42486, 43359, 63729, 65262, 86718, 97893, 127458, 130077, 195786, 260154, 1055069, 2110138, 3165207, 6330414, 9495621, 18991242]

約数ペア:

[(1, 18991242), (2, 9495621), (3, 6330414), (6, 3165207), (9, 2110138), (18, 1055069), (73, 260154), (97, 195786), (146, 130077), (149, 127458), (194, 97893), (219, 86718), (291, 65262), (298, 63729), (438, 43359), (447, 42486), (582, 32631), (657, 28906), (873, 21754), (894, 21243), (1314, 14453), (1341, 14162), (1746, 10877), (2682, 7081)]