25261840

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2897}}^1$

素因数の和:3019

約数の個数: 40

約数和(自身を含む): 59293080

約数和(自身を除く): 34031240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2897, 4360, 5794, 8720, 11588, 14485, 23176, 28970, 46352, 57940, 115880, 231760, 315773, 631546, 1263092, 1578865, 2526184, 3157730, 5052368, 6315460, 12630920, 25261840]

約数ペア:

[(1, 25261840), (2, 12630920), (4, 6315460), (5, 5052368), (8, 3157730), (10, 2526184), (16, 1578865), (20, 1263092), (40, 631546), (80, 315773), (109, 231760), (218, 115880), (436, 57940), (545, 46352), (872, 28970), (1090, 23176), (1744, 14485), (2180, 11588), (2897, 8720), (4360, 5794)]