128520453640

素因数分解:

$2^3\times 5^1\times {\mathrm{3213011341}}^1$

素因数の和:3213011352

約数の個数: 16

約数和(自身を含む): 289171020780

約数和(自身を除く): 160650567140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3213011341, 6426022682, 12852045364, 16065056705, 25704090728, 32130113410, 64260226820, 128520453640]

約数ペア:

[(1, 128520453640), (2, 64260226820), (4, 32130113410), (5, 25704090728), (8, 16065056705), (10, 12852045364), (20, 6426022682), (40, 3213011341)]