1788590920

素因数分解:

$2^3\times 5^1\times {\mathrm{2131}}^1\times {\mathrm{20983}}^1$

素因数の和:23125

約数の個数: 32

約数和(自身を含む): 4026409920

約数和(自身を除く): 2237819000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2131, 4262, 8524, 10655, 17048, 20983, 21310, 41966, 42620, 83932, 85240, 104915, 167864, 209830, 419660, 839320, 44714773, 89429546, 178859092, 223573865, 357718184, 447147730, 894295460, 1788590920]

約数ペア:

[(1, 1788590920), (2, 894295460), (4, 447147730), (5, 357718184), (8, 223573865), (10, 178859092), (20, 89429546), (40, 44714773), (2131, 839320), (4262, 419660), (8524, 209830), (10655, 167864), (17048, 104915), (20983, 85240), (21310, 83932), (41966, 42620)]