131321840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{126271}}^1$

素因数の和:126297

約数の個数: 40

約数和(自身を含む): 328812288

約数和(自身を除く): 197490448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 126271, 252542, 505084, 631355, 1010168, 1262710, 1641523, 2020336, 2525420, 3283046, 5050840, 6566092, 8207615, 10101680, 13132184, 16415230, 26264368, 32830460, 65660920, 131321840]

約数ペア:

[(1, 131321840), (2, 65660920), (4, 32830460), (5, 26264368), (8, 16415230), (10, 13132184), (13, 10101680), (16, 8207615), (20, 6566092), (26, 5050840), (40, 3283046), (52, 2525420), (65, 2020336), (80, 1641523), (104, 1262710), (130, 1010168), (208, 631355), (260, 505084), (520, 252542), (1040, 126271)]