19900965

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11149}}^1$

素因数の和:11181

約数の個数: 32

約数和(自身を含む): 38534400

約数和(自身を除く): 18633435

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11149, 33447, 55745, 78043, 167235, 189533, 234129, 390215, 568599, 947665, 1170645, 1326731, 2842995, 3980193, 6633655, 19900965]

約数ペア:

[(1, 19900965), (3, 6633655), (5, 3980193), (7, 2842995), (15, 1326731), (17, 1170645), (21, 947665), (35, 568599), (51, 390215), (85, 234129), (105, 189533), (119, 167235), (255, 78043), (357, 55745), (595, 33447), (1785, 11149)]