21304595

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 28976640

約数和(自身を除く): 7672045

約数列:

[1, 5, 13, 31, 65, 97, 109, 155, 403, 485, 545, 1261, 1417, 2015, 3007, 3379, 6305, 7085, 10573, 15035, 16895, 39091, 43927, 52865, 137449, 195455, 219635, 327763, 687245, 1638815, 4260919, 21304595]

約数ペア:

[(1, 21304595), (5, 4260919), (13, 1638815), (31, 687245), (65, 327763), (97, 219635), (109, 195455), (155, 137449), (403, 52865), (485, 43927), (545, 39091), (1261, 16895), (1417, 15035), (2015, 10573), (3007, 7085), (3379, 6305)]