18914008

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{233}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 36363600

約数和(自身を除く): 17449592

約数列:

[1, 2, 4, 8, 73, 139, 146, 233, 278, 292, 466, 556, 584, 932, 1112, 1864, 10147, 17009, 20294, 32387, 34018, 40588, 64774, 68036, 81176, 129548, 136072, 259096, 2364251, 4728502, 9457004, 18914008]

約数ペア:

[(1, 18914008), (2, 9457004), (4, 4728502), (8, 2364251), (73, 259096), (139, 136072), (146, 129548), (233, 81176), (278, 68036), (292, 64774), (466, 40588), (556, 34018), (584, 32387), (932, 20294), (1112, 17009), (1864, 10147)]