131812720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{126743}}^1$

素因数の和:126769

約数の個数: 40

約数和(自身を含む): 330041376

約数和(自身を除く): 198228656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 126743, 253486, 506972, 633715, 1013944, 1267430, 1647659, 2027888, 2534860, 3295318, 5069720, 6590636, 8238295, 10139440, 13181272, 16476590, 26362544, 32953180, 65906360, 131812720]

約数ペア:

[(1, 131812720), (2, 65906360), (4, 32953180), (5, 26362544), (8, 16476590), (10, 13181272), (13, 10139440), (16, 8238295), (20, 6590636), (26, 5069720), (40, 3295318), (52, 2534860), (65, 2027888), (80, 1647659), (104, 1267430), (130, 1013944), (208, 633715), (260, 506972), (520, 253486), (1040, 126743)]