20551011

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 31610880

約数和(自身を除く): 11059869

約数列:

[1, 3, 13, 17, 39, 51, 139, 221, 223, 417, 663, 669, 1807, 2363, 2899, 3791, 5421, 7089, 8697, 11373, 30719, 30997, 49283, 92157, 92991, 147849, 402961, 526949, 1208883, 1580847, 6850337, 20551011]

約数ペア:

[(1, 20551011), (3, 6850337), (13, 1580847), (17, 1208883), (39, 526949), (51, 402961), (139, 147849), (221, 92991), (223, 92157), (417, 49283), (663, 30997), (669, 30719), (1807, 11373), (2363, 8697), (2899, 7089), (3791, 5421)]