21540978

素因数分解:

$2^1\times 3^5\times {\mathrm{127}}^1\times {\mathrm{349}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 48921600

約数和(自身を除く): 27380622

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 127, 162, 243, 254, 349, 381, 486, 698, 762, 1047, 1143, 2094, 2286, 3141, 3429, 6282, 6858, 9423, 10287, 18846, 20574, 28269, 30861, 44323, 56538, 61722, 84807, 88646, 132969, 169614, 265938, 398907, 797814, 1196721, 2393442, 3590163, 7180326, 10770489, 21540978]

約数ペア:

[(1, 21540978), (2, 10770489), (3, 7180326), (6, 3590163), (9, 2393442), (18, 1196721), (27, 797814), (54, 398907), (81, 265938), (127, 169614), (162, 132969), (243, 88646), (254, 84807), (349, 61722), (381, 56538), (486, 44323), (698, 30861), (762, 28269), (1047, 20574), (1143, 18846), (2094, 10287), (2286, 9423), (3141, 6858), (3429, 6282)]