217421440

素因数分解:

$2^7\times 5^1\times {\mathrm{383}}^1\times {\mathrm{887}}^1$

素因数の和:1289

約数の個数: 64

約数和(自身を含む): 521717760

約数和(自身を除く): 304296320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 383, 640, 766, 887, 1532, 1774, 1915, 3064, 3548, 3830, 4435, 6128, 7096, 7660, 8870, 12256, 14192, 15320, 17740, 24512, 28384, 30640, 35480, 49024, 56768, 61280, 70960, 113536, 122560, 141920, 245120, 283840, 339721, 567680, 679442, 1358884, 1698605, 2717768, 3397210, 5435536, 6794420, 10871072, 13588840, 21742144, 27177680, 43484288, 54355360, 108710720, 217421440]

約数ペア:

[(1, 217421440), (2, 108710720), (4, 54355360), (5, 43484288), (8, 27177680), (10, 21742144), (16, 13588840), (20, 10871072), (32, 6794420), (40, 5435536), (64, 3397210), (80, 2717768), (128, 1698605), (160, 1358884), (320, 679442), (383, 567680), (640, 339721), (766, 283840), (887, 245120), (1532, 141920), (1774, 122560), (1915, 113536), (3064, 70960), (3548, 61280), (3830, 56768), (4435, 49024), (6128, 35480), (7096, 30640), (7660, 28384), (8870, 24512), (12256, 17740), (14192, 15320)]