20857264

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{569}}^1$

素因数の和:685

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 21550736

約数列:

[1, 2, 4, 8, 16, 29, 58, 79, 116, 158, 232, 316, 464, 569, 632, 1138, 1264, 2276, 2291, 4552, 4582, 9104, 9164, 16501, 18328, 33002, 36656, 44951, 66004, 89902, 132008, 179804, 264016, 359608, 719216, 1303579, 2607158, 5214316, 10428632, 20857264]

約数ペア:

[(1, 20857264), (2, 10428632), (4, 5214316), (8, 2607158), (16, 1303579), (29, 719216), (58, 359608), (79, 264016), (116, 179804), (158, 132008), (232, 89902), (316, 66004), (464, 44951), (569, 36656), (632, 33002), (1138, 18328), (1264, 16501), (2276, 9164), (2291, 9104), (4552, 4582)]