643974656

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3121}}^1$

素因数の和:3183

約数の個数: 80

約数和(自身を含む): 1430825088

約数和(自身を除く): 786850432

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 208, 248, 256, 403, 416, 496, 512, 806, 832, 992, 1612, 1664, 1984, 3121, 3224, 3328, 3968, 6242, 6448, 6656, 7936, 12484, 12896, 15872, 24968, 25792, 40573, 49936, 51584, 81146, 96751, 99872, 103168, 162292, 193502, 199744, 206336, 324584, 387004, 399488, 649168, 774008, 798976, 1257763, 1298336, 1548016, 1597952, 2515526, 2596672, 3096032, 5031052, 5193344, 6192064, 10062104, 10386688, 12384128, 20124208, 20773376, 24768256, 40248416, 49536512, 80496832, 160993664, 321987328, 643974656]

約数ペア:

[(1, 643974656), (2, 321987328), (4, 160993664), (8, 80496832), (13, 49536512), (16, 40248416), (26, 24768256), (31, 20773376), (32, 20124208), (52, 12384128), (62, 10386688), (64, 10062104), (104, 6192064), (124, 5193344), (128, 5031052), (208, 3096032), (248, 2596672), (256, 2515526), (403, 1597952), (416, 1548016), (496, 1298336), (512, 1257763), (806, 798976), (832, 774008), (992, 649168), (1612, 399488), (1664, 387004), (1984, 324584), (3121, 206336), (3224, 199744), (3328, 193502), (3968, 162292), (6242, 103168), (6448, 99872), (6656, 96751), (7936, 81146), (12484, 51584), (12896, 49936), (15872, 40573), (24968, 25792)]