20451165

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 39616512

約数和(自身を除く): 19165347

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 61, 93, 103, 105, 155, 183, 217, 305, 309, 427, 465, 515, 651, 721, 915, 1085, 1281, 1545, 1891, 2135, 2163, 3193, 3255, 3605, 5673, 6283, 6405, 9455, 9579, 10815, 13237, 15965, 18849, 22351, 28365, 31415, 39711, 43981, 47895, 66185, 67053, 94245, 111755, 131943, 194773, 198555, 219905, 335265, 584319, 659715, 973865, 1363411, 2921595, 4090233, 6817055, 20451165]

約数ペア:

[(1, 20451165), (3, 6817055), (5, 4090233), (7, 2921595), (15, 1363411), (21, 973865), (31, 659715), (35, 584319), (61, 335265), (93, 219905), (103, 198555), (105, 194773), (155, 131943), (183, 111755), (217, 94245), (305, 67053), (309, 66185), (427, 47895), (465, 43981), (515, 39711), (651, 31415), (721, 28365), (915, 22351), (1085, 18849), (1281, 15965), (1545, 13237), (1891, 10815), (2135, 9579), (2163, 9455), (3193, 6405), (3255, 6283), (3605, 5673)]