20993138

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:374

約数の個数: 32

約数和(自身を含む): 34836480

約数和(自身を除く): 13843342

約数列:

[1, 2, 19, 31, 38, 62, 71, 142, 251, 502, 589, 1178, 1349, 2201, 2698, 4402, 4769, 7781, 9538, 15562, 17821, 35642, 41819, 83638, 147839, 295678, 338599, 552451, 677198, 1104902, 10496569, 20993138]

約数ペア:

[(1, 20993138), (2, 10496569), (19, 1104902), (31, 677198), (38, 552451), (62, 338599), (71, 295678), (142, 147839), (251, 83638), (502, 41819), (589, 35642), (1178, 17821), (1349, 15562), (2201, 9538), (2698, 7781), (4402, 4769)]