1221407131

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{1109}}^1\times {\mathrm{3659}}^1$

素因数の和:4818

約数の個数: 16

約数和(自身を含む): 1430035200

約数和(自身を除く): 208628069

約数列:

[1, 7, 43, 301, 1109, 3659, 7763, 25613, 47687, 157337, 333809, 1101359, 4057831, 28404817, 174486733, 1221407131]

約数ペア:

[(1, 1221407131), (7, 174486733), (43, 28404817), (301, 4057831), (1109, 1101359), (3659, 333809), (7763, 157337), (25613, 47687)]