28906885

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2557}}^1$

素因数の和:2605

約数の個数: 32

約数和(自身を含む): 44202240

約数和(自身を除く): 15295355

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 119, 133, 323, 595, 665, 1615, 2261, 2557, 11305, 12785, 17899, 43469, 48583, 89495, 217345, 242915, 304283, 340081, 825911, 1521415, 1700405, 4129555, 5781377, 28906885]

約数ペア:

[(1, 28906885), (5, 5781377), (7, 4129555), (17, 1700405), (19, 1521415), (35, 825911), (85, 340081), (95, 304283), (119, 242915), (133, 217345), (323, 89495), (595, 48583), (665, 43469), (1615, 17899), (2261, 12785), (2557, 11305)]