20969552

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1051}}^1$

素因数の和:1131

約数の個数: 40

約数和(自身を含む): 43047840

約数和(自身を除く): 22078288

約数列:

[1, 2, 4, 8, 16, 29, 43, 58, 86, 116, 172, 232, 344, 464, 688, 1051, 1247, 2102, 2494, 4204, 4988, 8408, 9976, 16816, 19952, 30479, 45193, 60958, 90386, 121916, 180772, 243832, 361544, 487664, 723088, 1310597, 2621194, 5242388, 10484776, 20969552]

約数ペア:

[(1, 20969552), (2, 10484776), (4, 5242388), (8, 2621194), (16, 1310597), (29, 723088), (43, 487664), (58, 361544), (86, 243832), (116, 180772), (172, 121916), (232, 90386), (344, 60958), (464, 45193), (688, 30479), (1051, 19952), (1247, 16816), (2102, 9976), (2494, 8408), (4204, 4988)]