19539860

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 22796140

約数列:

[1, 2, 4, 5, 10, 20, 79, 83, 149, 158, 166, 298, 316, 332, 395, 415, 596, 745, 790, 830, 1490, 1580, 1660, 2980, 6557, 11771, 12367, 13114, 23542, 24734, 26228, 32785, 47084, 49468, 58855, 61835, 65570, 117710, 123670, 131140, 235420, 247340, 976993, 1953986, 3907972, 4884965, 9769930, 19539860]

約数ペア:

[(1, 19539860), (2, 9769930), (4, 4884965), (5, 3907972), (10, 1953986), (20, 976993), (79, 247340), (83, 235420), (149, 131140), (158, 123670), (166, 117710), (298, 65570), (316, 61835), (332, 58855), (395, 49468), (415, 47084), (596, 32785), (745, 26228), (790, 24734), (830, 23542), (1490, 13114), (1580, 12367), (1660, 11771), (2980, 6557)]