278778880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{54449}}^1$

素因数の和:54474

約数の個数: 44

約数和(自身を含む): 668754900

約数和(自身を除く): 389976020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 54449, 108898, 217796, 272245, 435592, 544490, 871184, 1088980, 1742368, 2177960, 3484736, 4355920, 6969472, 8711840, 13938944, 17423680, 27877888, 34847360, 55755776, 69694720, 139389440, 278778880]

約数ペア:

[(1, 278778880), (2, 139389440), (4, 69694720), (5, 55755776), (8, 34847360), (10, 27877888), (16, 17423680), (20, 13938944), (32, 8711840), (40, 6969472), (64, 4355920), (80, 3484736), (128, 2177960), (160, 1742368), (256, 1088980), (320, 871184), (512, 544490), (640, 435592), (1024, 272245), (1280, 217796), (2560, 108898), (5120, 54449)]