20167371

素因数分解:

$3^2\times 7^3\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 48

約数和(自身を含む): 34944000

約数和(自身を除く): 14776629

約数列:

[1, 3, 7, 9, 21, 47, 49, 63, 139, 141, 147, 329, 343, 417, 423, 441, 973, 987, 1029, 1251, 2303, 2919, 2961, 3087, 6533, 6811, 6909, 8757, 16121, 19599, 20433, 20727, 45731, 47677, 48363, 58797, 61299, 137193, 143031, 145089, 320117, 411579, 429093, 960351, 2240819, 2881053, 6722457, 20167371]

約数ペア:

[(1, 20167371), (3, 6722457), (7, 2881053), (9, 2240819), (21, 960351), (47, 429093), (49, 411579), (63, 320117), (139, 145089), (141, 143031), (147, 137193), (329, 61299), (343, 58797), (417, 48363), (423, 47677), (441, 45731), (973, 20727), (987, 20433), (1029, 19599), (1251, 16121), (2303, 8757), (2919, 6909), (2961, 6811), (3087, 6533)]