20999828

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{463}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 42094080

約数和(自身を除く): 21094252

約数列:

[1, 2, 4, 17, 23, 29, 34, 46, 58, 68, 92, 116, 391, 463, 493, 667, 782, 926, 986, 1334, 1564, 1852, 1972, 2668, 7871, 10649, 11339, 13427, 15742, 21298, 22678, 26854, 31484, 42596, 45356, 53708, 181033, 228259, 308821, 362066, 456518, 617642, 724132, 913036, 1235284, 5249957, 10499914, 20999828]

約数ペア:

[(1, 20999828), (2, 10499914), (4, 5249957), (17, 1235284), (23, 913036), (29, 724132), (34, 617642), (46, 456518), (58, 362066), (68, 308821), (92, 228259), (116, 181033), (391, 53708), (463, 45356), (493, 42596), (667, 31484), (782, 26854), (926, 22678), (986, 21298), (1334, 15742), (1564, 13427), (1852, 11339), (1972, 10649), (2668, 7871)]