21723009

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 37180416

約数和(自身を除く): 15457407

約数列:

[1, 3, 7, 11, 21, 33, 77, 83, 103, 121, 231, 249, 309, 363, 581, 721, 847, 913, 1133, 1743, 2163, 2541, 2739, 3399, 6391, 7931, 8549, 10043, 12463, 19173, 23793, 25647, 30129, 37389, 59843, 70301, 87241, 94039, 179529, 210903, 261723, 282117, 658273, 1034429, 1974819, 3103287, 7241003, 21723009]

約数ペア:

[(1, 21723009), (3, 7241003), (7, 3103287), (11, 1974819), (21, 1034429), (33, 658273), (77, 282117), (83, 261723), (103, 210903), (121, 179529), (231, 94039), (249, 87241), (309, 70301), (363, 59843), (581, 37389), (721, 30129), (847, 25647), (913, 23793), (1133, 19173), (1743, 12463), (2163, 10043), (2541, 8549), (2739, 7931), (3399, 6391)]