20373280

素因数分解:

$2^5\times 5^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:809

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 28059104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 223, 446, 571, 892, 1115, 1142, 1784, 2230, 2284, 2855, 3568, 4460, 4568, 5710, 7136, 8920, 9136, 11420, 17840, 18272, 22840, 35680, 45680, 91360, 127333, 254666, 509332, 636665, 1018664, 1273330, 2037328, 2546660, 4074656, 5093320, 10186640, 20373280]

約数ペア:

[(1, 20373280), (2, 10186640), (4, 5093320), (5, 4074656), (8, 2546660), (10, 2037328), (16, 1273330), (20, 1018664), (32, 636665), (40, 509332), (80, 254666), (160, 127333), (223, 91360), (446, 45680), (571, 35680), (892, 22840), (1115, 18272), (1142, 17840), (1784, 11420), (2230, 9136), (2284, 8920), (2855, 7136), (3568, 5710), (4460, 4568)]