2505020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{617}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 6229440

約数和(自身を除く): 3724420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 617, 812, 1015, 1234, 2030, 2468, 3085, 4060, 4319, 6170, 8638, 12340, 17276, 17893, 21595, 35786, 43190, 71572, 86380, 89465, 125251, 178930, 250502, 357860, 501004, 626255, 1252510, 2505020]

約数ペア:

[(1, 2505020), (2, 1252510), (4, 626255), (5, 501004), (7, 357860), (10, 250502), (14, 178930), (20, 125251), (28, 89465), (29, 86380), (35, 71572), (58, 43190), (70, 35786), (116, 21595), (140, 17893), (145, 17276), (203, 12340), (290, 8638), (406, 6170), (580, 4319), (617, 4060), (812, 3085), (1015, 2468), (1234, 2030)]