217530711

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:365

約数の個数: 64

約数和(自身を含む): 356659200

約数和(自身を除く): 139128489

約数列:

[1, 3, 9, 23, 27, 29, 47, 69, 87, 141, 207, 257, 261, 423, 621, 667, 771, 783, 1081, 1269, 1363, 2001, 2313, 3243, 4089, 5911, 6003, 6939, 7453, 9729, 12079, 12267, 17733, 18009, 22359, 29187, 31349, 36237, 36801, 53199, 67077, 94047, 108711, 159597, 171419, 201231, 277817, 282141, 326133, 350291, 514257, 833451, 846423, 1050873, 1542771, 2500353, 3152619, 4628313, 7501059, 8056693, 9457857, 24170079, 72510237, 217530711]

約数ペア:

[(1, 217530711), (3, 72510237), (9, 24170079), (23, 9457857), (27, 8056693), (29, 7501059), (47, 4628313), (69, 3152619), (87, 2500353), (141, 1542771), (207, 1050873), (257, 846423), (261, 833451), (423, 514257), (621, 350291), (667, 326133), (771, 282141), (783, 277817), (1081, 201231), (1269, 171419), (1363, 159597), (2001, 108711), (2313, 94047), (3243, 67077), (4089, 53199), (5911, 36801), (6003, 36237), (6939, 31349), (7453, 29187), (9729, 22359), (12079, 18009), (12267, 17733)]