81204210

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{20983}}^1$

素因数の和:21039

約数の個数: 48

約数和(自身を含む): 216051264

約数和(自身を除く): 134847054

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 20983, 41966, 62949, 104915, 125898, 188847, 209830, 314745, 377694, 629490, 902269, 944235, 1804538, 1888470, 2706807, 4511345, 5413614, 8120421, 9022690, 13534035, 16240842, 27068070, 40602105, 81204210]

約数ペア:

[(1, 81204210), (2, 40602105), (3, 27068070), (5, 16240842), (6, 13534035), (9, 9022690), (10, 8120421), (15, 5413614), (18, 4511345), (30, 2706807), (43, 1888470), (45, 1804538), (86, 944235), (90, 902269), (129, 629490), (215, 377694), (258, 314745), (387, 209830), (430, 188847), (645, 125898), (774, 104915), (1290, 62949), (1935, 41966), (3870, 20983)]