201718209

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1657}}^1$

素因数の和:1726

約数の個数: 64

約数和(自身を含む): 366723072

約数和(自身を除く): 165004863

約数列:

[1, 3, 7, 11, 17, 21, 31, 33, 51, 77, 93, 119, 187, 217, 231, 341, 357, 527, 561, 651, 1023, 1309, 1581, 1657, 2387, 3689, 3927, 4971, 5797, 7161, 11067, 11599, 17391, 18227, 28169, 34797, 40579, 51367, 54681, 84507, 121737, 127589, 154101, 197183, 309859, 359569, 382767, 565037, 591549, 873239, 929577, 1078707, 1695111, 2169013, 2619717, 3955259, 6112673, 6507039, 9605629, 11865777, 18338019, 28816887, 67239403, 201718209]

約数ペア:

[(1, 201718209), (3, 67239403), (7, 28816887), (11, 18338019), (17, 11865777), (21, 9605629), (31, 6507039), (33, 6112673), (51, 3955259), (77, 2619717), (93, 2169013), (119, 1695111), (187, 1078707), (217, 929577), (231, 873239), (341, 591549), (357, 565037), (527, 382767), (561, 359569), (651, 309859), (1023, 197183), (1309, 154101), (1581, 127589), (1657, 121737), (2387, 84507), (3689, 54681), (3927, 51367), (4971, 40579), (5797, 34797), (7161, 28169), (11067, 18227), (11599, 17391)]