64039840

素因数分解:

$2^5\times 5^1\times {\mathrm{400249}}^1$

素因数の和:400264

約数の個数: 24

約数和(自身を含む): 151294500

約数和(自身を除く): 87254660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 400249, 800498, 1600996, 2001245, 3201992, 4002490, 6403984, 8004980, 12807968, 16009960, 32019920, 64039840]

約数ペア:

[(1, 64039840), (2, 32019920), (4, 16009960), (5, 12807968), (8, 8004980), (10, 6403984), (16, 4002490), (20, 3201992), (32, 2001245), (40, 1600996), (80, 800498), (160, 400249)]