31311213

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 45308160

約数和(自身を除く): 13996947

約数列:

[1, 3, 29, 37, 71, 87, 111, 137, 213, 411, 1073, 2059, 2627, 3219, 3973, 5069, 6177, 7881, 9727, 11919, 15207, 29181, 76183, 147001, 228549, 282083, 359899, 441003, 846249, 1079697, 10437071, 31311213]

約数ペア:

[(1, 31311213), (3, 10437071), (29, 1079697), (37, 846249), (71, 441003), (87, 359899), (111, 282083), (137, 228549), (213, 147001), (411, 76183), (1073, 29181), (2059, 15207), (2627, 11919), (3219, 9727), (3973, 7881), (5069, 6177)]