64399540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139999}}^1$

素因数の和:140031

約数の個数: 24

約数和(自身を含む): 141120000

約数和(自身を除く): 76720460

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 139999, 279998, 559996, 699995, 1399990, 2799980, 3219977, 6439954, 12879908, 16099885, 32199770, 64399540]

約数ペア:

[(1, 64399540), (2, 32199770), (4, 16099885), (5, 12879908), (10, 6439954), (20, 3219977), (23, 2799980), (46, 1399990), (92, 699995), (115, 559996), (230, 279998), (460, 139999)]