31121955

素因数分解:

$3^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{857}}^1$

素因数の和:1140

約数の個数: 32

約数和(自身を含む): 55598400

約数和(自身を除く): 24476445

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 269, 807, 857, 1345, 2421, 2571, 4035, 4285, 7263, 7713, 12105, 12855, 23139, 36315, 38565, 115695, 230533, 691599, 1152665, 2074797, 3457995, 6224391, 10373985, 31121955]

約数ペア:

[(1, 31121955), (3, 10373985), (5, 6224391), (9, 3457995), (15, 2074797), (27, 1152665), (45, 691599), (135, 230533), (269, 115695), (807, 38565), (857, 36315), (1345, 23139), (2421, 12855), (2571, 12105), (4035, 7713), (4285, 7263)]