1320625840

素因数分解:

$2^4\times 5^1\times {\mathrm{16507823}}^1$

素因数の和:16507836

約数の個数: 20

約数和(自身を含む): 3070455264

約数和(自身を除く): 1749829424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 16507823, 33015646, 66031292, 82539115, 132062584, 165078230, 264125168, 330156460, 660312920, 1320625840]

約数ペア:

[(1, 1320625840), (2, 660312920), (4, 330156460), (5, 264125168), (8, 165078230), (10, 132062584), (16, 82539115), (20, 66031292), (40, 33015646), (80, 16507823)]