31498220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{9319}}^1$

素因数の和:9354

約数の個数: 36

約数和(自身を含む): 71633520

約数和(自身を除く): 40135300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 9319, 18638, 37276, 46595, 93190, 121147, 186380, 242294, 484588, 605735, 1211470, 1574911, 2422940, 3149822, 6299644, 7874555, 15749110, 31498220]

約数ペア:

[(1, 31498220), (2, 15749110), (4, 7874555), (5, 6299644), (10, 3149822), (13, 2422940), (20, 1574911), (26, 1211470), (52, 605735), (65, 484588), (130, 242294), (169, 186380), (260, 121147), (338, 93190), (676, 46595), (845, 37276), (1690, 18638), (3380, 9319)]