218635521

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{7669}}^1$

素因数の和:7745

約数の個数: 32

約数和(自身を含む): 340179840

約数和(自身を除く): 121544319

約数列:

[1, 3, 13, 17, 39, 43, 51, 129, 221, 559, 663, 731, 1677, 2193, 7669, 9503, 23007, 28509, 99697, 130373, 299091, 329767, 391119, 989301, 1694849, 4286971, 5084547, 5606039, 12860913, 16818117, 72878507, 218635521]

約数ペア:

[(1, 218635521), (3, 72878507), (13, 16818117), (17, 12860913), (39, 5606039), (43, 5084547), (51, 4286971), (129, 1694849), (221, 989301), (559, 391119), (663, 329767), (731, 299091), (1677, 130373), (2193, 99697), (7669, 28509), (9503, 23007)]