21557584

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{263}}^1$

素因数の和:427

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 21653936

約数列:

[1, 2, 4, 8, 16, 47, 94, 109, 188, 218, 263, 376, 436, 526, 752, 872, 1052, 1744, 2104, 4208, 5123, 10246, 12361, 20492, 24722, 28667, 40984, 49444, 57334, 81968, 98888, 114668, 197776, 229336, 458672, 1347349, 2694698, 5389396, 10778792, 21557584]

約数ペア:

[(1, 21557584), (2, 10778792), (4, 5389396), (8, 2694698), (16, 1347349), (47, 458672), (94, 229336), (109, 197776), (188, 114668), (218, 98888), (263, 81968), (376, 57334), (436, 49444), (526, 40984), (752, 28667), (872, 24722), (1052, 20492), (1744, 12361), (2104, 10246), (4208, 5123)]