421395920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{1231}}^1$

素因数の和:1644

約数の個数: 80

約数和(自身を含む): 1072431360

約数和(自身を除く): 651035440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 389, 440, 778, 880, 1231, 1556, 1945, 2462, 3112, 3890, 4279, 4924, 6155, 6224, 7780, 8558, 9848, 12310, 13541, 15560, 17116, 19696, 21395, 24620, 27082, 31120, 34232, 42790, 49240, 54164, 67705, 68464, 85580, 98480, 108328, 135410, 171160, 216656, 270820, 342320, 478859, 541640, 957718, 1083280, 1915436, 2394295, 3830872, 4788590, 5267449, 7661744, 9577180, 10534898, 19154360, 21069796, 26337245, 38308720, 42139592, 52674490, 84279184, 105348980, 210697960, 421395920]

約数ペア:

[(1, 421395920), (2, 210697960), (4, 105348980), (5, 84279184), (8, 52674490), (10, 42139592), (11, 38308720), (16, 26337245), (20, 21069796), (22, 19154360), (40, 10534898), (44, 9577180), (55, 7661744), (80, 5267449), (88, 4788590), (110, 3830872), (176, 2394295), (220, 1915436), (389, 1083280), (440, 957718), (778, 541640), (880, 478859), (1231, 342320), (1556, 270820), (1945, 216656), (2462, 171160), (3112, 135410), (3890, 108328), (4279, 98480), (4924, 85580), (6155, 68464), (6224, 67705), (7780, 54164), (8558, 49240), (9848, 42790), (12310, 34232), (13541, 31120), (15560, 27082), (17116, 24620), (19696, 21395)]