21231063

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1553}}^1$

素因数の和:1604

約数の個数: 36

約数和(自身を含む): 36848448

約数和(自身を除く): 15617385

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1519, 1553, 1953, 4557, 4659, 10871, 13671, 13977, 32613, 48143, 76097, 97839, 144429, 228291, 337001, 433287, 684873, 1011003, 2359007, 3033009, 7077021, 21231063]

約数ペア:

[(1, 21231063), (3, 7077021), (7, 3033009), (9, 2359007), (21, 1011003), (31, 684873), (49, 433287), (63, 337001), (93, 228291), (147, 144429), (217, 97839), (279, 76097), (441, 48143), (651, 32613), (1519, 13977), (1553, 13671), (1953, 10871), (4557, 4659)]