28184920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{6841}}^1$

素因数の和:6955

約数の個数: 32

約数和(自身を含む): 64041120

約数和(自身を除く): 35856200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 6841, 13682, 27364, 34205, 54728, 68410, 136820, 273640, 704623, 1409246, 2818492, 3523115, 5636984, 7046230, 14092460, 28184920]

約数ペア:

[(1, 28184920), (2, 14092460), (4, 7046230), (5, 5636984), (8, 3523115), (10, 2818492), (20, 1409246), (40, 704623), (103, 273640), (206, 136820), (412, 68410), (515, 54728), (824, 34205), (1030, 27364), (2060, 13682), (4120, 6841)]