21246989421

素因数分解:

$3^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{1039837}}^1$

素因数の和:1039993

約数の個数: 24

約数和(自身を含む): 33191628960

約数和(自身を除く): 11944639539

約数列:

[1, 3, 7, 21, 49, 139, 147, 417, 973, 2919, 6811, 20433, 1039837, 3119511, 7278859, 21836577, 50952013, 144537343, 152856039, 433612029, 1011761401, 3035284203, 7082329807, 21246989421]

約数ペア:

[(1, 21246989421), (3, 7082329807), (7, 3035284203), (21, 1011761401), (49, 433612029), (139, 152856039), (147, 144537343), (417, 50952013), (973, 21836577), (2919, 7278859), (6811, 3119511), (20433, 1039837)]