20514095

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 30774528

約数和(自身を除く): 10260433

約数列:

[1, 5, 7, 31, 35, 37, 49, 73, 155, 185, 217, 245, 259, 365, 511, 1085, 1147, 1295, 1519, 1813, 2263, 2555, 2701, 3577, 5735, 7595, 8029, 9065, 11315, 13505, 15841, 17885, 18907, 40145, 56203, 79205, 83731, 94535, 110887, 132349, 281015, 418655, 554435, 586117, 661745, 2930585, 4102819, 20514095]

約数ペア:

[(1, 20514095), (5, 4102819), (7, 2930585), (31, 661745), (35, 586117), (37, 554435), (49, 418655), (73, 281015), (155, 132349), (185, 110887), (217, 94535), (245, 83731), (259, 79205), (365, 56203), (511, 40145), (1085, 18907), (1147, 17885), (1295, 15841), (1519, 13505), (1813, 11315), (2263, 9065), (2555, 8029), (2701, 7595), (3577, 5735)]