20802005

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25841}}^1$

素因数の和:25876

約数の個数: 16

約数和(自身を含む): 29769984

約数和(自身を除く): 8967979

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 25841, 129205, 180887, 594343, 904435, 2971715, 4160401, 20802005]

約数ペア:

[(1, 20802005), (5, 4160401), (7, 2971715), (23, 904435), (35, 594343), (115, 180887), (161, 129205), (805, 25841)]