21371281152

素因数分解:

$2^8\times 3^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{8329}}^1$

素因数の和:8618

約数の個数: 144

約数和(自身を含む): 61499790240

約数和(自身を除く): 40128509088

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 64, 78, 96, 104, 128, 156, 192, 208, 256, 257, 312, 384, 416, 514, 624, 768, 771, 832, 1028, 1248, 1542, 1664, 2056, 2496, 3084, 3328, 3341, 4112, 4992, 6168, 6682, 8224, 8329, 9984, 10023, 12336, 13364, 16448, 16658, 20046, 24672, 24987, 26728, 32896, 33316, 40092, 49344, 49974, 53456, 65792, 66632, 80184, 98688, 99948, 106912, 108277, 133264, 160368, 197376, 199896, 213824, 216554, 266528, 320736, 324831, 399792, 427648, 433108, 533056, 641472, 649662, 799584, 855296, 866216, 1066112, 1282944, 1299324, 1599168, 1732432, 2132224, 2140553, 2565888, 2598648, 3198336, 3464864, 4281106, 5197296, 6396672, 6421659, 6929728, 8562212, 10394592, 12843318, 13859456, 17124424, 20789184, 25686636, 27718912, 27827189, 34248848, 41578368, 51373272, 55654378, 68497696, 83156736, 83481567, 102746544, 111308756, 136995392, 166963134, 205493088, 222617512, 273990784, 333926268, 410986176, 445235024, 547981568, 667852536, 821972352, 890470048, 1335705072, 1643944704, 1780940096, 2671410144, 3561880192, 5342820288, 7123760384, 10685640576, 21371281152]

約数ペア:

[(1, 21371281152), (2, 10685640576), (3, 7123760384), (4, 5342820288), (6, 3561880192), (8, 2671410144), (12, 1780940096), (13, 1643944704), (16, 1335705072), (24, 890470048), (26, 821972352), (32, 667852536), (39, 547981568), (48, 445235024), (52, 410986176), (64, 333926268), (78, 273990784), (96, 222617512), (104, 205493088), (128, 166963134), (156, 136995392), (192, 111308756), (208, 102746544), (256, 83481567), (257, 83156736), (312, 68497696), (384, 55654378), (416, 51373272), (514, 41578368), (624, 34248848), (768, 27827189), (771, 27718912), (832, 25686636), (1028, 20789184), (1248, 17124424), (1542, 13859456), (1664, 12843318), (2056, 10394592), (2496, 8562212), (3084, 6929728), (3328, 6421659), (3341, 6396672), (4112, 5197296), (4992, 4281106), (6168, 3464864), (6682, 3198336), (8224, 2598648), (8329, 2565888), (9984, 2140553), (10023, 2132224), (12336, 1732432), (13364, 1599168), (16448, 1299324), (16658, 1282944), (20046, 1066112), (24672, 866216), (24987, 855296), (26728, 799584), (32896, 649662), (33316, 641472), (40092, 533056), (49344, 433108), (49974, 427648), (53456, 399792), (65792, 324831), (66632, 320736), (80184, 266528), (98688, 216554), (99948, 213824), (106912, 199896), (108277, 197376), (133264, 160368)]