20160800

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:139

約数の個数: 144

約数和(自身を含む): 56246400

約数和(自身を除く): 36085600

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 29, 32, 40, 44, 50, 55, 58, 79, 80, 88, 100, 110, 116, 145, 158, 160, 176, 200, 220, 232, 275, 290, 316, 319, 352, 395, 400, 440, 464, 550, 580, 632, 638, 725, 790, 800, 869, 880, 928, 1100, 1160, 1264, 1276, 1450, 1580, 1595, 1738, 1760, 1975, 2200, 2291, 2320, 2528, 2552, 2900, 3160, 3190, 3476, 3950, 4345, 4400, 4582, 4640, 5104, 5800, 6320, 6380, 6952, 7900, 7975, 8690, 8800, 9164, 10208, 11455, 11600, 12640, 12760, 13904, 15800, 15950, 17380, 18328, 21725, 22910, 23200, 25201, 25520, 27808, 31600, 31900, 34760, 36656, 43450, 45820, 50402, 51040, 57275, 63200, 63800, 69520, 73312, 86900, 91640, 100804, 114550, 126005, 127600, 139040, 173800, 183280, 201608, 229100, 252010, 255200, 347600, 366560, 403216, 458200, 504020, 630025, 695200, 806432, 916400, 1008040, 1260050, 1832800, 2016080, 2520100, 4032160, 5040200, 10080400, 20160800]

約数ペア:

[(1, 20160800), (2, 10080400), (4, 5040200), (5, 4032160), (8, 2520100), (10, 2016080), (11, 1832800), (16, 1260050), (20, 1008040), (22, 916400), (25, 806432), (29, 695200), (32, 630025), (40, 504020), (44, 458200), (50, 403216), (55, 366560), (58, 347600), (79, 255200), (80, 252010), (88, 229100), (100, 201608), (110, 183280), (116, 173800), (145, 139040), (158, 127600), (160, 126005), (176, 114550), (200, 100804), (220, 91640), (232, 86900), (275, 73312), (290, 69520), (316, 63800), (319, 63200), (352, 57275), (395, 51040), (400, 50402), (440, 45820), (464, 43450), (550, 36656), (580, 34760), (632, 31900), (638, 31600), (725, 27808), (790, 25520), (800, 25201), (869, 23200), (880, 22910), (928, 21725), (1100, 18328), (1160, 17380), (1264, 15950), (1276, 15800), (1450, 13904), (1580, 12760), (1595, 12640), (1738, 11600), (1760, 11455), (1975, 10208), (2200, 9164), (2291, 8800), (2320, 8690), (2528, 7975), (2552, 7900), (2900, 6952), (3160, 6380), (3190, 6320), (3476, 5800), (3950, 5104), (4345, 4640), (4400, 4582)]