20719816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{709}}^1$

素因数の和:1009

約数の個数: 32

約数和(自身を含む): 42046200

約数和(自身を除く): 21326384

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 281, 562, 709, 1124, 1418, 2248, 2836, 3653, 5672, 7306, 9217, 14612, 18434, 29224, 36868, 73736, 199229, 398458, 796916, 1593832, 2589977, 5179954, 10359908, 20719816]

約数ペア:

[(1, 20719816), (2, 10359908), (4, 5179954), (8, 2589977), (13, 1593832), (26, 796916), (52, 398458), (104, 199229), (281, 73736), (562, 36868), (709, 29224), (1124, 18434), (1418, 14612), (2248, 9217), (2836, 7306), (3653, 5672)]