21290792

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140071}}^1$

素因数の和:140096

約数の個数: 16

約数和(自身を含む): 42021600

約数和(自身を除く): 20730808

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140071, 280142, 560284, 1120568, 2661349, 5322698, 10645396, 21290792]

約数ペア:

[(1, 21290792), (2, 10645396), (4, 5322698), (8, 2661349), (19, 1120568), (38, 560284), (76, 280142), (152, 140071)]