20535165

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:231

約数の個数: 72

約数和(自身を含む): 42325920

約数和(自身を除く): 21790755

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 67, 105, 139, 147, 201, 245, 315, 335, 417, 441, 469, 603, 695, 735, 973, 1005, 1251, 1407, 2085, 2205, 2345, 2919, 3015, 3283, 4221, 4865, 6255, 6811, 7035, 8757, 9313, 9849, 14595, 16415, 20433, 21105, 27939, 29547, 34055, 43785, 46565, 49245, 61299, 65191, 83817, 102165, 139695, 147735, 195573, 306495, 325955, 419085, 456337, 586719, 977865, 1369011, 2281685, 2933595, 4107033, 6845055, 20535165]

約数ペア:

[(1, 20535165), (3, 6845055), (5, 4107033), (7, 2933595), (9, 2281685), (15, 1369011), (21, 977865), (35, 586719), (45, 456337), (49, 419085), (63, 325955), (67, 306495), (105, 195573), (139, 147735), (147, 139695), (201, 102165), (245, 83817), (315, 65191), (335, 61299), (417, 49245), (441, 46565), (469, 43785), (603, 34055), (695, 29547), (735, 27939), (973, 21105), (1005, 20433), (1251, 16415), (1407, 14595), (2085, 9849), (2205, 9313), (2345, 8757), (2919, 7035), (3015, 6811), (3283, 6255), (4221, 4865)]