20289328

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{599}}^1$

素因数の和:709

約数の個数: 40

約数和(自身を含む): 41292000

約数和(自身を除く): 21002672

約数列:

[1, 2, 4, 8, 16, 29, 58, 73, 116, 146, 232, 292, 464, 584, 599, 1168, 1198, 2117, 2396, 4234, 4792, 8468, 9584, 16936, 17371, 33872, 34742, 43727, 69484, 87454, 138968, 174908, 277936, 349816, 699632, 1268083, 2536166, 5072332, 10144664, 20289328]

約数ペア:

[(1, 20289328), (2, 10144664), (4, 5072332), (8, 2536166), (16, 1268083), (29, 699632), (58, 349816), (73, 277936), (116, 174908), (146, 138968), (232, 87454), (292, 69484), (464, 43727), (584, 34742), (599, 33872), (1168, 17371), (1198, 16936), (2117, 9584), (2396, 8468), (4234, 4792)]