20028080

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{3169}}^1$

素因数の和:3261

約数の個数: 40

約数和(自身を含む): 47169600

約数和(自身を除く): 27141520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 3169, 6320, 6338, 12676, 15845, 25352, 31690, 50704, 63380, 126760, 250351, 253520, 500702, 1001404, 1251755, 2002808, 2503510, 4005616, 5007020, 10014040, 20028080]

約数ペア:

[(1, 20028080), (2, 10014040), (4, 5007020), (5, 4005616), (8, 2503510), (10, 2002808), (16, 1251755), (20, 1001404), (40, 500702), (79, 253520), (80, 250351), (158, 126760), (316, 63380), (395, 50704), (632, 31690), (790, 25352), (1264, 15845), (1580, 12676), (3160, 6338), (3169, 6320)]