20885445

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:216

約数の個数: 80

約数和(自身を含む): 43908480

約数和(自身を除く): 23023035

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 53, 63, 81, 105, 135, 139, 159, 189, 265, 315, 371, 405, 417, 477, 567, 695, 795, 945, 973, 1113, 1251, 1431, 1855, 2085, 2385, 2835, 2919, 3339, 3753, 4293, 4865, 5565, 6255, 7155, 7367, 8757, 10017, 11259, 14595, 16695, 18765, 21465, 22101, 26271, 30051, 36835, 43785, 50085, 51569, 56295, 66303, 78813, 110505, 131355, 150255, 154707, 198909, 257845, 331515, 394065, 464121, 596727, 773535, 994545, 1392363, 2320605, 2983635, 4177089, 6961815, 20885445]

約数ペア:

[(1, 20885445), (3, 6961815), (5, 4177089), (7, 2983635), (9, 2320605), (15, 1392363), (21, 994545), (27, 773535), (35, 596727), (45, 464121), (53, 394065), (63, 331515), (81, 257845), (105, 198909), (135, 154707), (139, 150255), (159, 131355), (189, 110505), (265, 78813), (315, 66303), (371, 56295), (405, 51569), (417, 50085), (477, 43785), (567, 36835), (695, 30051), (795, 26271), (945, 22101), (973, 21465), (1113, 18765), (1251, 16695), (1431, 14595), (1855, 11259), (2085, 10017), (2385, 8757), (2835, 7367), (2919, 7155), (3339, 6255), (3753, 5565), (4293, 4865)]