21058384

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1307}}^1$

素因数の和:1387

約数の個数: 40

約数和(自身を含む): 43791840

約数和(自身を除く): 22733456

約数列:

[1, 2, 4, 8, 16, 19, 38, 53, 76, 106, 152, 212, 304, 424, 848, 1007, 1307, 2014, 2614, 4028, 5228, 8056, 10456, 16112, 20912, 24833, 49666, 69271, 99332, 138542, 198664, 277084, 397328, 554168, 1108336, 1316149, 2632298, 5264596, 10529192, 21058384]

約数ペア:

[(1, 21058384), (2, 10529192), (4, 5264596), (8, 2632298), (16, 1316149), (19, 1108336), (38, 554168), (53, 397328), (76, 277084), (106, 198664), (152, 138542), (212, 99332), (304, 69271), (424, 49666), (848, 24833), (1007, 20912), (1307, 16112), (2014, 10456), (2614, 8056), (4028, 5228)]