18455216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{1069}}^1$

素因数の和:1173

約数の個数: 40

約数和(自身を含む): 39007920

約数和(自身を除く): 20552704

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 83, 104, 166, 208, 332, 664, 1069, 1079, 1328, 2138, 2158, 4276, 4316, 8552, 8632, 13897, 17104, 17264, 27794, 55588, 88727, 111176, 177454, 222352, 354908, 709816, 1153451, 1419632, 2306902, 4613804, 9227608, 18455216]

約数ペア:

[(1, 18455216), (2, 9227608), (4, 4613804), (8, 2306902), (13, 1419632), (16, 1153451), (26, 709816), (52, 354908), (83, 222352), (104, 177454), (166, 111176), (208, 88727), (332, 55588), (664, 27794), (1069, 17264), (1079, 17104), (1328, 13897), (2138, 8632), (2158, 8552), (4276, 4316)]