28715220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5501}}^1$

素因数の和:5545

約数の個数: 72

約数和(自身を含む): 90122760

約数和(自身を除く): 61407540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 5220, 5501, 11002, 16503, 22004, 27505, 33006, 49509, 55010, 66012, 82515, 99018, 110020, 159529, 165030, 198036, 247545, 319058, 330060, 478587, 495090, 638116, 797645, 957174, 990180, 1435761, 1595290, 1914348, 2392935, 2871522, 3190580, 4785870, 5743044, 7178805, 9571740, 14357610, 28715220]

約数ペア:

[(1, 28715220), (2, 14357610), (3, 9571740), (4, 7178805), (5, 5743044), (6, 4785870), (9, 3190580), (10, 2871522), (12, 2392935), (15, 1914348), (18, 1595290), (20, 1435761), (29, 990180), (30, 957174), (36, 797645), (45, 638116), (58, 495090), (60, 478587), (87, 330060), (90, 319058), (116, 247545), (145, 198036), (174, 165030), (180, 159529), (261, 110020), (290, 99018), (348, 82515), (435, 66012), (522, 55010), (580, 49509), (870, 33006), (1044, 27505), (1305, 22004), (1740, 16503), (2610, 11002), (5220, 5501)]