20647936

素因数分解:

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

素因数の和:166

約数の個数: 39

約数和(自身を含む): 41880583

約数和(自身を除く): 21232647

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 256, 284, 512, 568, 1024, 1136, 2048, 2272, 4096, 4544, 5041, 9088, 10082, 18176, 20164, 36352, 40328, 72704, 80656, 145408, 161312, 290816, 322624, 645248, 1290496, 2580992, 5161984, 10323968, 20647936]

約数ペア:

[(1, 20647936), (2, 10323968), (4, 5161984), (8, 2580992), (16, 1290496), (32, 645248), (64, 322624), (71, 290816), (128, 161312), (142, 145408), (256, 80656), (284, 72704), (512, 40328), (568, 36352), (1024, 20164), (1136, 18176), (2048, 10082), (2272, 9088), (4096, 5041)]