321987328

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3121}}^1$

素因数の和:3181

約数の個数: 72

約数和(自身を含む): 714713216

約数和(自身を除く): 392725888

約数列:

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

約数ペア:

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