256819656

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:619

約数の個数: 128

約数和(自身を含む): 721612800

約数和(自身を除く): 464793144

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 23, 24, 38, 46, 47, 57, 69, 76, 92, 94, 114, 138, 141, 152, 184, 188, 228, 276, 282, 376, 437, 456, 521, 552, 564, 874, 893, 1042, 1081, 1128, 1311, 1563, 1748, 1786, 2084, 2162, 2622, 2679, 3126, 3243, 3496, 3572, 4168, 4324, 5244, 5358, 6252, 6486, 7144, 8648, 9899, 10488, 10716, 11983, 12504, 12972, 19798, 20539, 21432, 23966, 24487, 25944, 29697, 35949, 39596, 41078, 47932, 48974, 59394, 61617, 71898, 73461, 79192, 82156, 95864, 97948, 118788, 123234, 143796, 146922, 164312, 195896, 227677, 237576, 246468, 287592, 293844, 455354, 465253, 492936, 563201, 587688, 683031, 910708, 930506, 1126402, 1366062, 1395759, 1689603, 1821416, 1861012, 2252804, 2732124, 2791518, 3379206, 3722024, 4505608, 5464248, 5583036, 6758412, 10700819, 11166072, 13516824, 21401638, 32102457, 42803276, 64204914, 85606552, 128409828, 256819656]

約数ペア:

[(1, 256819656), (2, 128409828), (3, 85606552), (4, 64204914), (6, 42803276), (8, 32102457), (12, 21401638), (19, 13516824), (23, 11166072), (24, 10700819), (38, 6758412), (46, 5583036), (47, 5464248), (57, 4505608), (69, 3722024), (76, 3379206), (92, 2791518), (94, 2732124), (114, 2252804), (138, 1861012), (141, 1821416), (152, 1689603), (184, 1395759), (188, 1366062), (228, 1126402), (276, 930506), (282, 910708), (376, 683031), (437, 587688), (456, 563201), (521, 492936), (552, 465253), (564, 455354), (874, 293844), (893, 287592), (1042, 246468), (1081, 237576), (1128, 227677), (1311, 195896), (1563, 164312), (1748, 146922), (1786, 143796), (2084, 123234), (2162, 118788), (2622, 97948), (2679, 95864), (3126, 82156), (3243, 79192), (3496, 73461), (3572, 71898), (4168, 61617), (4324, 59394), (5244, 48974), (5358, 47932), (6252, 41078), (6486, 39596), (7144, 35949), (8648, 29697), (9899, 25944), (10488, 24487), (10716, 23966), (11983, 21432), (12504, 20539), (12972, 19798)]