178560920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{61151}}^1$

素因数の和:61235

約数の個数: 32

約数和(自身を含む): 407272320

約数和(自身を除く): 228711400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 61151, 122302, 244604, 305755, 489208, 611510, 1223020, 2446040, 4464023, 8928046, 17856092, 22320115, 35712184, 44640230, 89280460, 178560920]

約数ペア:

[(1, 178560920), (2, 89280460), (4, 44640230), (5, 35712184), (8, 22320115), (10, 17856092), (20, 8928046), (40, 4464023), (73, 2446040), (146, 1223020), (292, 611510), (365, 489208), (584, 305755), (730, 244604), (1460, 122302), (2920, 61151)]