1978989

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:121

約数の個数: 24

約数和(自身を含む): 2919840

約数和(自身を除く): 940851

約数列:

[1, 3, 23, 29, 43, 69, 87, 129, 529, 667, 989, 1247, 1587, 2001, 2967, 3741, 15341, 22747, 28681, 46023, 68241, 86043, 659663, 1978989]

約数ペア:

[(1, 1978989), (3, 659663), (23, 86043), (29, 68241), (43, 46023), (69, 28681), (87, 22747), (129, 15341), (529, 3741), (667, 2967), (989, 2001), (1247, 1587)]