21480412

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{2593}}^1$

素因数の和:2725

約数の個数: 24

約数和(自身を含む): 39947600

約数和(自身を除く): 18467188

約数列:

[1, 2, 4, 19, 38, 76, 109, 218, 436, 2071, 2593, 4142, 5186, 8284, 10372, 49267, 98534, 197068, 282637, 565274, 1130548, 5370103, 10740206, 21480412]

約数ペア:

[(1, 21480412), (2, 10740206), (4, 5370103), (19, 1130548), (38, 565274), (76, 282637), (109, 197068), (218, 98534), (436, 49267), (2071, 10372), (2593, 8284), (4142, 5186)]