1280788208

素因数分解:

$2^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{187469}}^1$

素因数の和:187545

約数の個数: 40

約数和(自身を含む): 2882538720

約数和(自身を除く): 1601750512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 61, 112, 122, 244, 427, 488, 854, 976, 1708, 3416, 6832, 187469, 374938, 749876, 1312283, 1499752, 2624566, 2999504, 5249132, 10498264, 11435609, 20996528, 22871218, 45742436, 80049263, 91484872, 160098526, 182969744, 320197052, 640394104, 1280788208]

約数ペア:

[(1, 1280788208), (2, 640394104), (4, 320197052), (7, 182969744), (8, 160098526), (14, 91484872), (16, 80049263), (28, 45742436), (56, 22871218), (61, 20996528), (112, 11435609), (122, 10498264), (244, 5249132), (427, 2999504), (488, 2624566), (854, 1499752), (976, 1312283), (1708, 749876), (3416, 374938), (6832, 187469)]