21742371

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 39951360

約数和(自身を除く): 18208989

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 67, 101, 119, 153, 189, 201, 303, 357, 459, 469, 603, 707, 909, 1071, 1139, 1407, 1717, 1809, 2121, 2727, 3213, 3417, 4221, 5151, 6363, 6767, 7973, 10251, 12019, 12663, 15453, 19089, 20301, 23919, 30753, 36057, 46359, 47369, 60903, 71757, 108171, 115039, 142107, 182709, 215271, 324513, 345117, 426321, 805273, 1035351, 1278963, 2415819, 3106053, 7247457, 21742371]

約数ペア:

[(1, 21742371), (3, 7247457), (7, 3106053), (9, 2415819), (17, 1278963), (21, 1035351), (27, 805273), (51, 426321), (63, 345117), (67, 324513), (101, 215271), (119, 182709), (153, 142107), (189, 115039), (201, 108171), (303, 71757), (357, 60903), (459, 47369), (469, 46359), (603, 36057), (707, 30753), (909, 23919), (1071, 20301), (1139, 19089), (1407, 15453), (1717, 12663), (1809, 12019), (2121, 10251), (2727, 7973), (3213, 6767), (3417, 6363), (4221, 5151)]