80360920

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{3947}}^1$

素因数の和:4467

約数の個数: 32

約数和(自身を含む): 181213200

約数和(自身を除く): 100852280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 3947, 4072, 5090, 7894, 10180, 15788, 19735, 20360, 31576, 39470, 78940, 157880, 2009023, 4018046, 8036092, 10045115, 16072184, 20090230, 40180460, 80360920]

約数ペア:

[(1, 80360920), (2, 40180460), (4, 20090230), (5, 16072184), (8, 10045115), (10, 8036092), (20, 4018046), (40, 2009023), (509, 157880), (1018, 78940), (2036, 39470), (2545, 31576), (3947, 20360), (4072, 19735), (5090, 15788), (7894, 10180)]