31481840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{30271}}^1$

素因数の和:30297

約数の個数: 40

約数和(自身を含む): 78828288

約数和(自身を除く): 47346448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 30271, 60542, 121084, 151355, 242168, 302710, 393523, 484336, 605420, 787046, 1210840, 1574092, 1967615, 2421680, 3148184, 3935230, 6296368, 7870460, 15740920, 31481840]

約数ペア:

[(1, 31481840), (2, 15740920), (4, 7870460), (5, 6296368), (8, 3935230), (10, 3148184), (13, 2421680), (16, 1967615), (20, 1574092), (26, 1210840), (40, 787046), (52, 605420), (65, 484336), (80, 393523), (104, 302710), (130, 242168), (208, 151355), (260, 121084), (520, 60542), (1040, 30271)]