20442040

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6469}}^1$

素因数の和:6559

約数の個数: 32

約数和(自身を含む): 46584000

約数和(自身を除く): 26141960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6469, 12938, 25876, 32345, 51752, 64690, 129380, 258760, 511051, 1022102, 2044204, 2555255, 4088408, 5110510, 10221020, 20442040]

約数ペア:

[(1, 20442040), (2, 10221020), (4, 5110510), (5, 4088408), (8, 2555255), (10, 2044204), (20, 1022102), (40, 511051), (79, 258760), (158, 129380), (316, 64690), (395, 51752), (632, 32345), (790, 25876), (1580, 12938), (3160, 6469)]