20728848

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:245

約数の個数: 160

約数和(自身を含む): 68567040

約数和(自身を除く): 47838192

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 17, 19, 21, 24, 28, 34, 38, 42, 48, 51, 56, 57, 68, 76, 84, 102, 112, 114, 119, 133, 136, 152, 168, 191, 204, 228, 238, 266, 272, 304, 323, 336, 357, 382, 399, 408, 456, 476, 532, 573, 646, 714, 764, 798, 816, 912, 952, 969, 1064, 1146, 1292, 1337, 1428, 1528, 1596, 1904, 1938, 2128, 2261, 2292, 2584, 2674, 2856, 3056, 3192, 3247, 3629, 3876, 4011, 4522, 4584, 5168, 5348, 5712, 6384, 6494, 6783, 7258, 7752, 8022, 9044, 9168, 9741, 10696, 10887, 12988, 13566, 14516, 15504, 16044, 18088, 19482, 21392, 21774, 22729, 25403, 25976, 27132, 29032, 32088, 36176, 38964, 43548, 45458, 50806, 51952, 54264, 58064, 61693, 64176, 68187, 76209, 77928, 87096, 90916, 101612, 108528, 123386, 136374, 152418, 155856, 174192, 181832, 185079, 203224, 246772, 272748, 304836, 363664, 370158, 406448, 431851, 493544, 545496, 609672, 740316, 863702, 987088, 1090992, 1219344, 1295553, 1480632, 1727404, 2591106, 2961264, 3454808, 5182212, 6909616, 10364424, 20728848]

約数ペア:

[(1, 20728848), (2, 10364424), (3, 6909616), (4, 5182212), (6, 3454808), (7, 2961264), (8, 2591106), (12, 1727404), (14, 1480632), (16, 1295553), (17, 1219344), (19, 1090992), (21, 987088), (24, 863702), (28, 740316), (34, 609672), (38, 545496), (42, 493544), (48, 431851), (51, 406448), (56, 370158), (57, 363664), (68, 304836), (76, 272748), (84, 246772), (102, 203224), (112, 185079), (114, 181832), (119, 174192), (133, 155856), (136, 152418), (152, 136374), (168, 123386), (191, 108528), (204, 101612), (228, 90916), (238, 87096), (266, 77928), (272, 76209), (304, 68187), (323, 64176), (336, 61693), (357, 58064), (382, 54264), (399, 51952), (408, 50806), (456, 45458), (476, 43548), (532, 38964), (573, 36176), (646, 32088), (714, 29032), (764, 27132), (798, 25976), (816, 25403), (912, 22729), (952, 21774), (969, 21392), (1064, 19482), (1146, 18088), (1292, 16044), (1337, 15504), (1428, 14516), (1528, 13566), (1596, 12988), (1904, 10887), (1938, 10696), (2128, 9741), (2261, 9168), (2292, 9044), (2584, 8022), (2674, 7752), (2856, 7258), (3056, 6783), (3192, 6494), (3247, 6384), (3629, 5712), (3876, 5348), (4011, 5168), (4522, 4584)]