2151945

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 48

約数和(自身を含む): 4127760

約数和(自身を除く): 1975815

約数列:

[1, 3, 5, 9, 15, 17, 29, 45, 51, 85, 87, 97, 145, 153, 255, 261, 291, 435, 485, 493, 765, 873, 1305, 1455, 1479, 1649, 2465, 2813, 4365, 4437, 4947, 7395, 8245, 8439, 14065, 14841, 22185, 24735, 25317, 42195, 47821, 74205, 126585, 143463, 239105, 430389, 717315, 2151945]

約数ペア:

[(1, 2151945), (3, 717315), (5, 430389), (9, 239105), (15, 143463), (17, 126585), (29, 74205), (45, 47821), (51, 42195), (85, 25317), (87, 24735), (97, 22185), (145, 14841), (153, 14065), (255, 8439), (261, 8245), (291, 7395), (435, 4947), (485, 4437), (493, 4365), (765, 2813), (873, 2465), (1305, 1649), (1455, 1479)]