257831420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{167423}}^1$

素因数の和:167450

約数の個数: 48

約数和(自身を含む): 675053568

約数和(自身を除く): 417222148

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 167423, 334846, 669692, 837115, 1171961, 1674230, 1841653, 2343922, 3348460, 3683306, 4687844, 5859805, 7366612, 9208265, 11719610, 12891571, 18416530, 23439220, 25783142, 36833060, 51566284, 64457855, 128915710, 257831420]

約数ペア:

[(1, 257831420), (2, 128915710), (4, 64457855), (5, 51566284), (7, 36833060), (10, 25783142), (11, 23439220), (14, 18416530), (20, 12891571), (22, 11719610), (28, 9208265), (35, 7366612), (44, 5859805), (55, 4687844), (70, 3683306), (77, 3348460), (110, 2343922), (140, 1841653), (154, 1674230), (220, 1171961), (308, 837115), (385, 669692), (770, 334846), (1540, 167423)]