20149424

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{839}}^1$

素因数の和:945

約数の個数: 40

約数和(自身を含む): 41664000

約数和(自身を除く): 21514576

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 79, 152, 158, 304, 316, 632, 839, 1264, 1501, 1678, 3002, 3356, 6004, 6712, 12008, 13424, 15941, 24016, 31882, 63764, 66281, 127528, 132562, 255056, 265124, 530248, 1060496, 1259339, 2518678, 5037356, 10074712, 20149424]

約数ペア:

[(1, 20149424), (2, 10074712), (4, 5037356), (8, 2518678), (16, 1259339), (19, 1060496), (38, 530248), (76, 265124), (79, 255056), (152, 132562), (158, 127528), (304, 66281), (316, 63764), (632, 31882), (839, 24016), (1264, 15941), (1501, 13424), (1678, 12008), (3002, 6712), (3356, 6004)]