20210295

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{887}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 38873088

約数和(自身を除く): 18662793

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 49, 93, 105, 147, 155, 217, 245, 465, 651, 735, 887, 1085, 1519, 2661, 3255, 4435, 4557, 6209, 7595, 13305, 18627, 22785, 27497, 31045, 43463, 82491, 93135, 130389, 137485, 192479, 217315, 412455, 577437, 651945, 962395, 1347353, 2887185, 4042059, 6736765, 20210295]

約数ペア:

[(1, 20210295), (3, 6736765), (5, 4042059), (7, 2887185), (15, 1347353), (21, 962395), (31, 651945), (35, 577437), (49, 412455), (93, 217315), (105, 192479), (147, 137485), (155, 130389), (217, 93135), (245, 82491), (465, 43463), (651, 31045), (735, 27497), (887, 22785), (1085, 18627), (1519, 13305), (2661, 7595), (3255, 6209), (4435, 4557)]