128816660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{19577}}^1$

素因数の和:19640

約数の個数: 48

約数和(自身を含む): 315753984

約数和(自身を除く): 186937324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3290, 6580, 19577, 39154, 78308, 97885, 137039, 195770, 274078, 391540, 548156, 685195, 920119, 1370390, 1840238, 2740780, 3680476, 4600595, 6440833, 9201190, 12881666, 18402380, 25763332, 32204165, 64408330, 128816660]

約数ペア:

[(1, 128816660), (2, 64408330), (4, 32204165), (5, 25763332), (7, 18402380), (10, 12881666), (14, 9201190), (20, 6440833), (28, 4600595), (35, 3680476), (47, 2740780), (70, 1840238), (94, 1370390), (140, 920119), (188, 685195), (235, 548156), (329, 391540), (470, 274078), (658, 195770), (940, 137039), (1316, 97885), (1645, 78308), (3290, 39154), (6580, 19577)]