21797181

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1039}}^1$

素因数の和:1095

約数の個数: 40

約数和(自身を含む): 38255360

約数和(自身を除く): 16458179

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 999, 1039, 2331, 2997, 3117, 6993, 7273, 9351, 20979, 21819, 28053, 38443, 65457, 84159, 115329, 196371, 269101, 345987, 589113, 807303, 1037961, 2421909, 3113883, 7265727, 21797181]

約数ペア:

[(1, 21797181), (3, 7265727), (7, 3113883), (9, 2421909), (21, 1037961), (27, 807303), (37, 589113), (63, 345987), (81, 269101), (111, 196371), (189, 115329), (259, 84159), (333, 65457), (567, 38443), (777, 28053), (999, 21819), (1039, 20979), (2331, 9351), (2997, 7273), (3117, 6993)]