21189376

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{6367}}^1$

素因数の和:6396

約数の個数: 36

約数和(自身を含む): 45556672

約数和(自身を除く): 24367296

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 6367, 12734, 25468, 50936, 82771, 101872, 165542, 203744, 331084, 407488, 662168, 814976, 1324336, 1629952, 2648672, 5297344, 10594688, 21189376]

約数ペア:

[(1, 21189376), (2, 10594688), (4, 5297344), (8, 2648672), (13, 1629952), (16, 1324336), (26, 814976), (32, 662168), (52, 407488), (64, 331084), (104, 203744), (128, 165542), (208, 101872), (256, 82771), (416, 50936), (832, 25468), (1664, 12734), (3328, 6367)]