78940040

素因数分解:

$2^3\times 5^1\times {\mathrm{1973501}}^1$

素因数の和:1973512

約数の個数: 16

約数和(自身を含む): 177615180

約数和(自身を除く): 98675140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1973501, 3947002, 7894004, 9867505, 15788008, 19735010, 39470020, 78940040]

約数ペア:

[(1, 78940040), (2, 39470020), (4, 19735010), (5, 15788008), (8, 9867505), (10, 7894004), (20, 3947002), (40, 1973501)]