20842255

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1523}}^1$

素因数の和:1575

約数の個数: 32

約数和(自身を含む): 31601664

約数和(自身を除く): 10759409

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 391, 595, 805, 1523, 1955, 2737, 7615, 10661, 13685, 25891, 35029, 53305, 129455, 175145, 181237, 245203, 595493, 906185, 1226015, 2977465, 4168451, 20842255]

約数ペア:

[(1, 20842255), (5, 4168451), (7, 2977465), (17, 1226015), (23, 906185), (35, 595493), (85, 245203), (115, 181237), (119, 175145), (161, 129455), (391, 53305), (595, 35029), (805, 25891), (1523, 13685), (1955, 10661), (2737, 7615)]