21007119

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 35108864

約数和(自身を除く): 14101745

約数列:

[1, 3, 7, 21, 23, 31, 61, 69, 93, 161, 183, 217, 427, 483, 529, 651, 713, 1281, 1403, 1587, 1891, 2139, 3703, 4209, 4991, 5673, 9821, 11109, 13237, 14973, 16399, 29463, 32269, 39711, 43493, 49197, 96807, 114793, 130479, 225883, 304451, 344379, 677649, 913353, 1000339, 3001017, 7002373, 21007119]

約数ペア:

[(1, 21007119), (3, 7002373), (7, 3001017), (21, 1000339), (23, 913353), (31, 677649), (61, 344379), (69, 304451), (93, 225883), (161, 130479), (183, 114793), (217, 96807), (427, 49197), (483, 43493), (529, 39711), (651, 32269), (713, 29463), (1281, 16399), (1403, 14973), (1587, 13237), (1891, 11109), (2139, 9821), (3703, 5673), (4209, 4991)]