20742318

素因数分解:

$2^1\times 3^4\times {\mathrm{61}}^1\times {\mathrm{2099}}^1$

素因数の和:2174

約数の個数: 40

約数和(自身を含む): 47262600

約数和(自身を除く): 26520282

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 61, 81, 122, 162, 183, 366, 549, 1098, 1647, 2099, 3294, 4198, 4941, 6297, 9882, 12594, 18891, 37782, 56673, 113346, 128039, 170019, 256078, 340038, 384117, 768234, 1152351, 2304702, 3457053, 6914106, 10371159, 20742318]

約数ペア:

[(1, 20742318), (2, 10371159), (3, 6914106), (6, 3457053), (9, 2304702), (18, 1152351), (27, 768234), (54, 384117), (61, 340038), (81, 256078), (122, 170019), (162, 128039), (183, 113346), (366, 56673), (549, 37782), (1098, 18891), (1647, 12594), (2099, 9882), (3294, 6297), (4198, 4941)]