209310787

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 258048000

約数和(自身を除く): 48737213

約数列:

[1, 7, 23, 47, 139, 161, 199, 329, 973, 1081, 1393, 3197, 4577, 6533, 7567, 9353, 22379, 27661, 32039, 45731, 65471, 150259, 193627, 215119, 636203, 1051813, 1300067, 1505833, 4453421, 9100469, 29901541, 209310787]

約数ペア:

[(1, 209310787), (7, 29901541), (23, 9100469), (47, 4453421), (139, 1505833), (161, 1300067), (199, 1051813), (329, 636203), (973, 215119), (1081, 193627), (1393, 150259), (3197, 65471), (4577, 45731), (6533, 32039), (7567, 27661), (9353, 22379)]