20672085

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:382

約数の個数: 64

約数和(自身を含む): 41236992

約数和(自身を除く): 20564907

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 37, 51, 85, 105, 111, 119, 185, 255, 259, 313, 357, 555, 595, 629, 777, 939, 1295, 1565, 1785, 1887, 2191, 3145, 3885, 4403, 4695, 5321, 6573, 9435, 10955, 11581, 13209, 15963, 22015, 26605, 32865, 34743, 37247, 57905, 66045, 79815, 81067, 111741, 173715, 186235, 196877, 243201, 405335, 558705, 590631, 984385, 1216005, 1378139, 2953155, 4134417, 6890695, 20672085]

約数ペア:

[(1, 20672085), (3, 6890695), (5, 4134417), (7, 2953155), (15, 1378139), (17, 1216005), (21, 984385), (35, 590631), (37, 558705), (51, 405335), (85, 243201), (105, 196877), (111, 186235), (119, 173715), (185, 111741), (255, 81067), (259, 79815), (313, 66045), (357, 57905), (555, 37247), (595, 34743), (629, 32865), (777, 26605), (939, 22015), (1295, 15963), (1565, 13209), (1785, 11581), (1887, 10955), (2191, 9435), (3145, 6573), (3885, 5321), (4403, 4695)]