638744568

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{821}}^1$

素因数の和:1269

約数の個数: 128

約数和(自身を含む): 1998051840

約数和(自身を除く): 1359307272

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 42, 44, 56, 66, 77, 84, 88, 132, 154, 168, 231, 264, 308, 421, 462, 616, 821, 842, 924, 1263, 1642, 1684, 1848, 2463, 2526, 2947, 3284, 3368, 4631, 4926, 5052, 5747, 5894, 6568, 8841, 9031, 9262, 9852, 10104, 11494, 11788, 13893, 17241, 17682, 18062, 18524, 19704, 22988, 23576, 27093, 27786, 32417, 34482, 35364, 36124, 37048, 45976, 54186, 55572, 63217, 64834, 68964, 70728, 72248, 97251, 108372, 111144, 126434, 129668, 137928, 189651, 194502, 216744, 252868, 259336, 345641, 379302, 389004, 505736, 691282, 758604, 778008, 1036923, 1382564, 1517208, 2073846, 2419487, 2765128, 3802051, 4147692, 4838974, 7258461, 7604102, 8295384, 9677948, 11406153, 14516922, 15208204, 19355896, 22812306, 26614357, 29033844, 30416408, 45624612, 53228714, 58067688, 79843071, 91249224, 106457428, 159686142, 212914856, 319372284, 638744568]

約数ペア:

[(1, 638744568), (2, 319372284), (3, 212914856), (4, 159686142), (6, 106457428), (7, 91249224), (8, 79843071), (11, 58067688), (12, 53228714), (14, 45624612), (21, 30416408), (22, 29033844), (24, 26614357), (28, 22812306), (33, 19355896), (42, 15208204), (44, 14516922), (56, 11406153), (66, 9677948), (77, 8295384), (84, 7604102), (88, 7258461), (132, 4838974), (154, 4147692), (168, 3802051), (231, 2765128), (264, 2419487), (308, 2073846), (421, 1517208), (462, 1382564), (616, 1036923), (821, 778008), (842, 758604), (924, 691282), (1263, 505736), (1642, 389004), (1684, 379302), (1848, 345641), (2463, 259336), (2526, 252868), (2947, 216744), (3284, 194502), (3368, 189651), (4631, 137928), (4926, 129668), (5052, 126434), (5747, 111144), (5894, 108372), (6568, 97251), (8841, 72248), (9031, 70728), (9262, 68964), (9852, 64834), (10104, 63217), (11494, 55572), (11788, 54186), (13893, 45976), (17241, 37048), (17682, 36124), (18062, 35364), (18524, 34482), (19704, 32417), (22988, 27786), (23576, 27093)]