20488377

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 35417088

約数和(自身を除く): 14928711

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 169, 251, 273, 299, 483, 507, 753, 897, 1183, 1757, 2093, 3263, 3549, 3887, 5271, 5773, 6279, 9789, 11661, 17319, 22841, 27209, 40411, 42419, 68523, 75049, 81627, 121233, 127257, 225147, 296933, 525343, 890799, 975637, 1576029, 2926911, 6829459, 20488377]

約数ペア:

[(1, 20488377), (3, 6829459), (7, 2926911), (13, 1576029), (21, 975637), (23, 890799), (39, 525343), (69, 296933), (91, 225147), (161, 127257), (169, 121233), (251, 81627), (273, 75049), (299, 68523), (483, 42419), (507, 40411), (753, 27209), (897, 22841), (1183, 17319), (1757, 11661), (2093, 9789), (3263, 6279), (3549, 5773), (3887, 5271)]