20028160

素因数分解:

$2^8\times 5^1\times {\mathrm{15647}}^1$

素因数の和:15668

約数の個数: 36

約数和(自身を含む): 47976768

約数和(自身を除く): 27948608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15647, 31294, 62588, 78235, 125176, 156470, 250352, 312940, 500704, 625880, 1001408, 1251760, 2002816, 2503520, 4005632, 5007040, 10014080, 20028160]

約数ペア:

[(1, 20028160), (2, 10014080), (4, 5007040), (5, 4005632), (8, 2503520), (10, 2002816), (16, 1251760), (20, 1001408), (32, 625880), (40, 500704), (64, 312940), (80, 250352), (128, 156470), (160, 125176), (256, 78235), (320, 62588), (640, 31294), (1280, 15647)]