86439640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{308713}}^1$

素因数の和:308731

約数の個数: 32

約数和(自身を含む): 222274080

約数和(自身を除く): 135834440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 308713, 617426, 1234852, 1543565, 2160991, 2469704, 3087130, 4321982, 6174260, 8643964, 10804955, 12348520, 17287928, 21609910, 43219820, 86439640]

約数ペア:

[(1, 86439640), (2, 43219820), (4, 21609910), (5, 17287928), (7, 12348520), (8, 10804955), (10, 8643964), (14, 6174260), (20, 4321982), (28, 3087130), (35, 2469704), (40, 2160991), (56, 1543565), (70, 1234852), (140, 617426), (280, 308713)]