21229568

素因数分解:

$2^{12}\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:168

約数の個数: 52

約数和(自身を含む): 43641648

約数和(自身を除く): 22412080

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 73, 128, 142, 146, 256, 284, 292, 512, 568, 584, 1024, 1136, 1168, 2048, 2272, 2336, 4096, 4544, 4672, 5183, 9088, 9344, 10366, 18176, 18688, 20732, 36352, 37376, 41464, 72704, 74752, 82928, 145408, 149504, 165856, 290816, 299008, 331712, 663424, 1326848, 2653696, 5307392, 10614784, 21229568]

約数ペア:

[(1, 21229568), (2, 10614784), (4, 5307392), (8, 2653696), (16, 1326848), (32, 663424), (64, 331712), (71, 299008), (73, 290816), (128, 165856), (142, 149504), (146, 145408), (256, 82928), (284, 74752), (292, 72704), (512, 41464), (568, 37376), (584, 36352), (1024, 20732), (1136, 18688), (1168, 18176), (2048, 10366), (2272, 9344), (2336, 9088), (4096, 5183), (4544, 4672)]