128520140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{131143}}^1$

素因数の和:131166

約数の個数: 36

約数和(自身を含む): 313958736

約数和(自身を除く): 185438596

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 131143, 262286, 524572, 655715, 918001, 1311430, 1836002, 2622860, 3672004, 4590005, 6426007, 9180010, 12852014, 18360020, 25704028, 32130035, 64260070, 128520140]

約数ペア:

[(1, 128520140), (2, 64260070), (4, 32130035), (5, 25704028), (7, 18360020), (10, 12852014), (14, 9180010), (20, 6426007), (28, 4590005), (35, 3672004), (49, 2622860), (70, 1836002), (98, 1311430), (140, 918001), (196, 655715), (245, 524572), (490, 262286), (980, 131143)]