21043144

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{431}}^1$

素因数の和:813

約数の個数: 32

約数和(自身を含む): 41990400

約数和(自身を除く): 20947256

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 359, 431, 718, 862, 1436, 1724, 2872, 3448, 6103, 7327, 12206, 14654, 24412, 29308, 48824, 58616, 154729, 309458, 618916, 1237832, 2630393, 5260786, 10521572, 21043144]

約数ペア:

[(1, 21043144), (2, 10521572), (4, 5260786), (8, 2630393), (17, 1237832), (34, 618916), (68, 309458), (136, 154729), (359, 58616), (431, 48824), (718, 29308), (862, 24412), (1436, 14654), (1724, 12206), (2872, 7327), (3448, 6103)]