201631689

素因数分解:

$3^2\times 7^1\times {\mathrm{521}}^1\times {\mathrm{6143}}^1$

素因数の和:6677

約数の個数: 24

約数和(自身を含む): 333545472

約数和(自身を除く): 131913783

約数列:

[1, 3, 7, 9, 21, 63, 521, 1563, 3647, 4689, 6143, 10941, 18429, 32823, 43001, 55287, 129003, 387009, 3200503, 9601509, 22403521, 28804527, 67210563, 201631689]

約数ペア:

[(1, 201631689), (3, 67210563), (7, 28804527), (9, 22403521), (21, 9601509), (63, 3200503), (521, 387009), (1563, 129003), (3647, 55287), (4689, 43001), (6143, 32823), (10941, 18429)]