31088871

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 51342720

約数和(自身を除く): 20253849

約数列:

[1, 3, 9, 11, 33, 43, 67, 99, 109, 129, 201, 327, 387, 473, 603, 737, 981, 1199, 1419, 2211, 2881, 3597, 4257, 4687, 6633, 7303, 8643, 10791, 14061, 21909, 25929, 31691, 42183, 51557, 65727, 80333, 95073, 154671, 240999, 285219, 314029, 464013, 722997, 942087, 2826261, 3454319, 10362957, 31088871]

約数ペア:

[(1, 31088871), (3, 10362957), (9, 3454319), (11, 2826261), (33, 942087), (43, 722997), (67, 464013), (99, 314029), (109, 285219), (129, 240999), (201, 154671), (327, 95073), (387, 80333), (473, 65727), (603, 51557), (737, 42183), (981, 31691), (1199, 25929), (1419, 21909), (2211, 14061), (2881, 10791), (3597, 8643), (4257, 7303), (4687, 6633)]