21204038

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{4073}}^1$

素因数の和:4231

約数の個数: 16

約数和(自身を含む): 33732720

約数和(自身を除く): 12528682

約数列:

[1, 2, 19, 38, 137, 274, 2603, 4073, 5206, 8146, 77387, 154774, 558001, 1116002, 10602019, 21204038]

約数ペア:

[(1, 21204038), (2, 10602019), (19, 1116002), (38, 558001), (137, 154774), (274, 77387), (2603, 8146), (4073, 5206)]