21647004

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^3\times {\mathrm{263}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 53518080

約数和(自身を除く): 31871076

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 263, 361, 526, 722, 789, 1052, 1083, 1444, 1578, 2166, 3156, 4332, 4997, 6859, 9994, 13718, 14991, 19988, 20577, 27436, 29982, 41154, 59964, 82308, 94943, 189886, 284829, 379772, 569658, 1139316, 1803917, 3607834, 5411751, 7215668, 10823502, 21647004]

約数ペア:

[(1, 21647004), (2, 10823502), (3, 7215668), (4, 5411751), (6, 3607834), (12, 1803917), (19, 1139316), (38, 569658), (57, 379772), (76, 284829), (114, 189886), (228, 94943), (263, 82308), (361, 59964), (526, 41154), (722, 29982), (789, 27436), (1052, 20577), (1083, 19988), (1444, 14991), (1578, 13718), (2166, 9994), (3156, 6859), (4332, 4997)]