25718330

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 53187840

約数和(自身を除く): 27469510

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 71, 74, 89, 110, 142, 178, 185, 355, 370, 407, 445, 710, 781, 814, 890, 979, 1562, 1958, 2035, 2627, 3293, 3905, 4070, 4895, 5254, 6319, 6586, 7810, 9790, 12638, 13135, 16465, 26270, 28897, 31595, 32930, 36223, 57794, 63190, 69509, 72446, 139018, 144485, 181115, 233803, 288970, 347545, 362230, 467606, 695090, 1169015, 2338030, 2571833, 5143666, 12859165, 25718330]

約数ペア:

[(1, 25718330), (2, 12859165), (5, 5143666), (10, 2571833), (11, 2338030), (22, 1169015), (37, 695090), (55, 467606), (71, 362230), (74, 347545), (89, 288970), (110, 233803), (142, 181115), (178, 144485), (185, 139018), (355, 72446), (370, 69509), (407, 63190), (445, 57794), (710, 36223), (781, 32930), (814, 31595), (890, 28897), (979, 26270), (1562, 16465), (1958, 13135), (2035, 12638), (2627, 9790), (3293, 7810), (3905, 6586), (4070, 6319), (4895, 5254)]