256478872

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:201

約数の個数: 128

約数和(自身を含む): 580608000

約数和(自身を除く): 324129128

約数列:

[1, 2, 4, 8, 13, 19, 26, 31, 38, 52, 53, 62, 76, 79, 104, 106, 124, 152, 158, 212, 247, 248, 316, 403, 424, 494, 589, 632, 689, 806, 988, 1007, 1027, 1178, 1378, 1501, 1612, 1643, 1976, 2014, 2054, 2356, 2449, 2756, 3002, 3224, 3286, 4028, 4108, 4187, 4712, 4898, 5512, 6004, 6572, 7657, 8056, 8216, 8374, 9796, 12008, 13091, 13144, 15314, 16748, 19513, 19592, 21359, 26182, 30628, 31217, 31837, 33496, 39026, 42718, 46531, 52364, 54431, 61256, 62434, 63674, 78052, 79553, 85436, 93062, 104728, 108862, 124868, 127348, 129797, 156104, 159106, 170872, 186124, 217724, 249736, 254696, 259594, 318212, 372248, 405821, 435448, 519188, 604903, 636424, 811642, 1034189, 1038376, 1209806, 1623284, 1687361, 2068378, 2419612, 2466143, 3246568, 3374722, 4136756, 4839224, 4932286, 6749444, 8273512, 9864572, 13498888, 19729144, 32059859, 64119718, 128239436, 256478872]

約数ペア:

[(1, 256478872), (2, 128239436), (4, 64119718), (8, 32059859), (13, 19729144), (19, 13498888), (26, 9864572), (31, 8273512), (38, 6749444), (52, 4932286), (53, 4839224), (62, 4136756), (76, 3374722), (79, 3246568), (104, 2466143), (106, 2419612), (124, 2068378), (152, 1687361), (158, 1623284), (212, 1209806), (247, 1038376), (248, 1034189), (316, 811642), (403, 636424), (424, 604903), (494, 519188), (589, 435448), (632, 405821), (689, 372248), (806, 318212), (988, 259594), (1007, 254696), (1027, 249736), (1178, 217724), (1378, 186124), (1501, 170872), (1612, 159106), (1643, 156104), (1976, 129797), (2014, 127348), (2054, 124868), (2356, 108862), (2449, 104728), (2756, 93062), (3002, 85436), (3224, 79553), (3286, 78052), (4028, 63674), (4108, 62434), (4187, 61256), (4712, 54431), (4898, 52364), (5512, 46531), (6004, 42718), (6572, 39026), (7657, 33496), (8056, 31837), (8216, 31217), (8374, 30628), (9796, 26182), (12008, 21359), (13091, 19592), (13144, 19513), (15314, 16748)]