20809040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37159}}^1$

素因数の和:37179

約数の個数: 40

約数和(自身を含む): 55294080

約数和(自身を除く): 34485040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37159, 74318, 148636, 185795, 260113, 297272, 371590, 520226, 594544, 743180, 1040452, 1300565, 1486360, 2080904, 2601130, 2972720, 4161808, 5202260, 10404520, 20809040]

約数ペア:

[(1, 20809040), (2, 10404520), (4, 5202260), (5, 4161808), (7, 2972720), (8, 2601130), (10, 2080904), (14, 1486360), (16, 1300565), (20, 1040452), (28, 743180), (35, 594544), (40, 520226), (56, 371590), (70, 297272), (80, 260113), (112, 185795), (140, 148636), (280, 74318), (560, 37159)]