21003008

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{6311}}^1$

素因数の和:6340

約数の個数: 36

約数和(自身を含む): 45156048

約数和(自身を除く): 24153040

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 6311, 12622, 25244, 50488, 82043, 100976, 164086, 201952, 328172, 403904, 656344, 807808, 1312688, 1615616, 2625376, 5250752, 10501504, 21003008]

約数ペア:

[(1, 21003008), (2, 10501504), (4, 5250752), (8, 2625376), (13, 1615616), (16, 1312688), (26, 807808), (32, 656344), (52, 403904), (64, 328172), (104, 201952), (128, 164086), (208, 100976), (256, 82043), (416, 50488), (832, 25244), (1664, 12622), (3328, 6311)]