20418610

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{389}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 38329200

約数和(自身を除く): 17910590

約数列:

[1, 2, 5, 10, 29, 58, 145, 181, 290, 362, 389, 778, 905, 1810, 1945, 3890, 5249, 10498, 11281, 22562, 26245, 52490, 56405, 70409, 112810, 140818, 352045, 704090, 2041861, 4083722, 10209305, 20418610]

約数ペア:

[(1, 20418610), (2, 10209305), (5, 4083722), (10, 2041861), (29, 704090), (58, 352045), (145, 140818), (181, 112810), (290, 70409), (362, 56405), (389, 52490), (778, 26245), (905, 22562), (1810, 11281), (1945, 10498), (3890, 5249)]