20539575

素因数分解:

$3^6\times 5^2\times 7^2\times {\mathrm{23}}^1$

素因数の和:65

約数の個数: 126

約数和(自身を含む): 46351944

約数和(自身を除く): 25812369

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 25, 27, 35, 45, 49, 63, 69, 75, 81, 105, 115, 135, 147, 161, 175, 189, 207, 225, 243, 245, 315, 345, 405, 441, 483, 525, 567, 575, 621, 675, 729, 735, 805, 945, 1035, 1127, 1215, 1225, 1323, 1449, 1575, 1701, 1725, 1863, 2025, 2205, 2415, 2835, 3105, 3381, 3645, 3675, 3969, 4025, 4347, 4725, 5103, 5175, 5589, 5635, 6075, 6615, 7245, 8505, 9315, 10143, 11025, 11907, 12075, 13041, 14175, 15525, 16767, 16905, 18225, 19845, 21735, 25515, 27945, 28175, 30429, 33075, 35721, 36225, 39123, 42525, 46575, 50715, 59535, 65205, 83835, 84525, 91287, 99225, 108675, 117369, 127575, 139725, 152145, 178605, 195615, 253575, 273861, 297675, 326025, 419175, 456435, 586845, 760725, 821583, 893025, 978075, 1369305, 2282175, 2934225, 4107915, 6846525, 20539575]

約数ペア:

[(1, 20539575), (3, 6846525), (5, 4107915), (7, 2934225), (9, 2282175), (15, 1369305), (21, 978075), (23, 893025), (25, 821583), (27, 760725), (35, 586845), (45, 456435), (49, 419175), (63, 326025), (69, 297675), (75, 273861), (81, 253575), (105, 195615), (115, 178605), (135, 152145), (147, 139725), (161, 127575), (175, 117369), (189, 108675), (207, 99225), (225, 91287), (243, 84525), (245, 83835), (315, 65205), (345, 59535), (405, 50715), (441, 46575), (483, 42525), (525, 39123), (567, 36225), (575, 35721), (621, 33075), (675, 30429), (729, 28175), (735, 27945), (805, 25515), (945, 21735), (1035, 19845), (1127, 18225), (1215, 16905), (1225, 16767), (1323, 15525), (1449, 14175), (1575, 13041), (1701, 12075), (1725, 11907), (1863, 11025), (2025, 10143), (2205, 9315), (2415, 8505), (2835, 7245), (3105, 6615), (3381, 6075), (3645, 5635), (3675, 5589), (3969, 5175), (4025, 5103), (4347, 4725)]