18987008

素因数分解:

$2^{11}\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 38787840

約数和(自身を除く): 19800832

約数列:

[1, 2, 4, 8, 16, 32, 64, 73, 127, 128, 146, 254, 256, 292, 508, 512, 584, 1016, 1024, 1168, 2032, 2048, 2336, 4064, 4672, 8128, 9271, 9344, 16256, 18542, 18688, 32512, 37084, 37376, 65024, 74168, 74752, 130048, 148336, 149504, 260096, 296672, 593344, 1186688, 2373376, 4746752, 9493504, 18987008]

約数ペア:

[(1, 18987008), (2, 9493504), (4, 4746752), (8, 2373376), (16, 1186688), (32, 593344), (64, 296672), (73, 260096), (127, 149504), (128, 148336), (146, 130048), (254, 74752), (256, 74168), (292, 65024), (508, 37376), (512, 37084), (584, 32512), (1016, 18688), (1024, 18542), (1168, 16256), (2032, 9344), (2048, 9271), (2336, 8128), (4064, 4672)]