201821543

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{359}}^1$

素因数の和:540

約数の個数: 32

約数和(自身を含む): 259200000

約数和(自身を除く): 57378457

約数列:

[1, 7, 11, 49, 77, 149, 343, 359, 539, 1043, 1639, 2513, 3773, 3949, 7301, 11473, 17591, 27643, 51107, 53491, 80311, 123137, 193501, 374437, 562177, 588401, 1354507, 2621059, 4118807, 18347413, 28831649, 201821543]

約数ペア:

[(1, 201821543), (7, 28831649), (11, 18347413), (49, 4118807), (77, 2621059), (149, 1354507), (343, 588401), (359, 562177), (539, 374437), (1043, 193501), (1639, 123137), (2513, 80311), (3773, 53491), (3949, 51107), (7301, 27643), (11473, 17591)]