28042707

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 50955264

約数和(自身を除く): 22912557

約数列:

[1, 3, 7, 11, 17, 21, 33, 37, 51, 77, 111, 119, 187, 193, 231, 259, 357, 407, 561, 579, 629, 777, 1221, 1309, 1351, 1887, 2123, 2849, 3281, 3927, 4053, 4403, 6369, 6919, 7141, 8547, 9843, 13209, 14861, 20757, 21423, 22967, 36091, 44583, 48433, 49987, 68901, 78551, 108273, 121397, 145299, 149961, 235653, 252637, 364191, 549857, 757911, 849779, 1335367, 1649571, 2549337, 4006101, 9347569, 28042707]

約数ペア:

[(1, 28042707), (3, 9347569), (7, 4006101), (11, 2549337), (17, 1649571), (21, 1335367), (33, 849779), (37, 757911), (51, 549857), (77, 364191), (111, 252637), (119, 235653), (187, 149961), (193, 145299), (231, 121397), (259, 108273), (357, 78551), (407, 68901), (561, 49987), (579, 48433), (629, 44583), (777, 36091), (1221, 22967), (1309, 21423), (1351, 20757), (1887, 14861), (2123, 13209), (2849, 9843), (3281, 8547), (3927, 7141), (4053, 6919), (4403, 6369)]