20972035

素因数分解:

$5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{2687}}^1$

素因数の和:2922

約数の個数: 16

約数和(自身を含む): 28901376

約数和(自身を除く): 7929341

約数列:

[1, 5, 7, 35, 223, 1115, 1561, 2687, 7805, 13435, 18809, 94045, 599201, 2996005, 4194407, 20972035]

約数ペア:

[(1, 20972035), (5, 4194407), (7, 2996005), (35, 599201), (223, 94045), (1115, 18809), (1561, 13435), (2687, 7805)]