72903920

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{21193}}^1$

素因数の和:21249

約数の個数: 40

約数和(自身を含む): 173451696

約数和(自身を除く): 100547776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 21193, 42386, 84772, 105965, 169544, 211930, 339088, 423860, 847720, 911299, 1695440, 1822598, 3645196, 4556495, 7290392, 9112990, 14580784, 18225980, 36451960, 72903920]

約数ペア:

[(1, 72903920), (2, 36451960), (4, 18225980), (5, 14580784), (8, 9112990), (10, 7290392), (16, 4556495), (20, 3645196), (40, 1822598), (43, 1695440), (80, 911299), (86, 847720), (172, 423860), (215, 339088), (344, 211930), (430, 169544), (688, 105965), (860, 84772), (1720, 42386), (3440, 21193)]