320663824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:408

約数の個数: 80

約数和(自身を含む): 688844800

約数和(自身を除く): 368180976

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 127, 199, 208, 244, 254, 398, 488, 508, 793, 796, 976, 1016, 1586, 1592, 1651, 2032, 2587, 3172, 3184, 3302, 5174, 6344, 6604, 7747, 10348, 12139, 12688, 13208, 15494, 20696, 24278, 25273, 26416, 30988, 41392, 48556, 50546, 61976, 97112, 100711, 101092, 123952, 157807, 194224, 201422, 202184, 315614, 328549, 402844, 404368, 631228, 657098, 805688, 1262456, 1314196, 1541653, 1611376, 2524912, 2628392, 3083306, 5256784, 6166612, 12333224, 20041489, 24666448, 40082978, 80165956, 160331912, 320663824]

約数ペア:

[(1, 320663824), (2, 160331912), (4, 80165956), (8, 40082978), (13, 24666448), (16, 20041489), (26, 12333224), (52, 6166612), (61, 5256784), (104, 3083306), (122, 2628392), (127, 2524912), (199, 1611376), (208, 1541653), (244, 1314196), (254, 1262456), (398, 805688), (488, 657098), (508, 631228), (793, 404368), (796, 402844), (976, 328549), (1016, 315614), (1586, 202184), (1592, 201422), (1651, 194224), (2032, 157807), (2587, 123952), (3172, 101092), (3184, 100711), (3302, 97112), (5174, 61976), (6344, 50546), (6604, 48556), (7747, 41392), (10348, 30988), (12139, 26416), (12688, 25273), (13208, 24278), (15494, 20696)]