21786928

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{463}}^1$

素因数の和:661

約数の個数: 40

約数和(自身を含む): 45050688

約数和(自身を除く): 23263760

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 173, 272, 346, 463, 692, 926, 1384, 1852, 2768, 2941, 3704, 5882, 7408, 7871, 11764, 15742, 23528, 31484, 47056, 62968, 80099, 125936, 160198, 320396, 640792, 1281584, 1361683, 2723366, 5446732, 10893464, 21786928]

約数ペア:

[(1, 21786928), (2, 10893464), (4, 5446732), (8, 2723366), (16, 1361683), (17, 1281584), (34, 640792), (68, 320396), (136, 160198), (173, 125936), (272, 80099), (346, 62968), (463, 47056), (692, 31484), (926, 23528), (1384, 15742), (1852, 11764), (2768, 7871), (2941, 7408), (3704, 5882)]