1640639

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1$

素因数の和:191

約数の個数: 24

約数和(自身を含む): 2234400

約数和(自身を除く): 593761

約数列:

[1, 7, 11, 13, 77, 91, 121, 143, 149, 847, 1001, 1043, 1573, 1639, 1937, 11011, 11473, 13559, 18029, 21307, 126203, 149149, 234377, 1640639]

約数ペア:

[(1, 1640639), (7, 234377), (11, 149149), (13, 126203), (77, 21307), (91, 18029), (121, 13559), (143, 11473), (149, 11011), (847, 1937), (1001, 1639), (1043, 1573)]