20816874

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5233}}^1$

素因数の和:5271

約数の個数: 48

約数和(自身を含む): 51439752

約数和(自身を除く): 30622878

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5233, 10466, 15699, 31398, 47097, 68029, 88961, 94194, 136058, 177922, 204087, 266883, 408174, 533766, 612261, 800649, 1156493, 1224522, 1601298, 2312986, 3469479, 6938958, 10408437, 20816874]

約数ペア:

[(1, 20816874), (2, 10408437), (3, 6938958), (6, 3469479), (9, 2312986), (13, 1601298), (17, 1224522), (18, 1156493), (26, 800649), (34, 612261), (39, 533766), (51, 408174), (78, 266883), (102, 204087), (117, 177922), (153, 136058), (221, 94194), (234, 88961), (306, 68029), (442, 47097), (663, 31398), (1326, 15699), (1989, 10466), (3978, 5233)]