21128170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{301831}}^1$

素因数の和:301845

約数の個数: 16

約数和(自身を含む): 43463808

約数和(自身を除く): 22335638

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 301831, 603662, 1509155, 2112817, 3018310, 4225634, 10564085, 21128170]

約数ペア:

[(1, 21128170), (2, 10564085), (5, 4225634), (7, 3018310), (10, 2112817), (14, 1509155), (35, 603662), (70, 301831)]