20512712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{907}}^1$

素因数の和:1181

約数の個数: 32

約数和(自身を含む): 42167520

約数和(自身を除く): 21654808

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 257, 514, 907, 1028, 1814, 2056, 2827, 3628, 5654, 7256, 9977, 11308, 19954, 22616, 39908, 79816, 233099, 466198, 932396, 1864792, 2564089, 5128178, 10256356, 20512712]

約数ペア:

[(1, 20512712), (2, 10256356), (4, 5128178), (8, 2564089), (11, 1864792), (22, 932396), (44, 466198), (88, 233099), (257, 79816), (514, 39908), (907, 22616), (1028, 19954), (1814, 11308), (2056, 9977), (2827, 7256), (3628, 5654)]