28041980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{1459}}^1$

素因数の和:1530

約数の個数: 36

約数和(自身を含む): 60890760

約数和(自身を除く): 32848780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1459, 1922, 2918, 3844, 4805, 5836, 7295, 9610, 14590, 19220, 29180, 45229, 90458, 180916, 226145, 452290, 904580, 1402099, 2804198, 5608396, 7010495, 14020990, 28041980]

約数ペア:

[(1, 28041980), (2, 14020990), (4, 7010495), (5, 5608396), (10, 2804198), (20, 1402099), (31, 904580), (62, 452290), (124, 226145), (155, 180916), (310, 90458), (620, 45229), (961, 29180), (1459, 19220), (1922, 14590), (2918, 9610), (3844, 7295), (4805, 5836)]