20996724

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1381}}^1$

素因数の和:1576

約数の個数: 48

約数和(自身を含む): 56341376

約数和(自身を除く): 35344652

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 181, 362, 543, 724, 1086, 1267, 1381, 2172, 2534, 2762, 3801, 4143, 5068, 5524, 7602, 8286, 9667, 15204, 16572, 19334, 29001, 38668, 58002, 116004, 249961, 499922, 749883, 999844, 1499766, 1749727, 2999532, 3499454, 5249181, 6998908, 10498362, 20996724]

約数ペア:

[(1, 20996724), (2, 10498362), (3, 6998908), (4, 5249181), (6, 3499454), (7, 2999532), (12, 1749727), (14, 1499766), (21, 999844), (28, 749883), (42, 499922), (84, 249961), (181, 116004), (362, 58002), (543, 38668), (724, 29001), (1086, 19334), (1267, 16572), (1381, 15204), (2172, 9667), (2534, 8286), (2762, 7602), (3801, 5524), (4143, 5068)]