21205260

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{367}}^1$

素因数の和:492

約数の個数: 96

約数和(自身を含む): 66769920

約数和(自身を除く): 45564660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 107, 108, 135, 180, 214, 270, 321, 367, 428, 535, 540, 642, 734, 963, 1070, 1101, 1284, 1468, 1605, 1835, 1926, 2140, 2202, 2889, 3210, 3303, 3670, 3852, 4404, 4815, 5505, 5778, 6420, 6606, 7340, 9630, 9909, 11010, 11556, 13212, 14445, 16515, 19260, 19818, 22020, 28890, 33030, 39269, 39636, 49545, 57780, 66060, 78538, 99090, 117807, 157076, 196345, 198180, 235614, 353421, 392690, 471228, 589035, 706842, 785380, 1060263, 1178070, 1413684, 1767105, 2120526, 2356140, 3534210, 4241052, 5301315, 7068420, 10602630, 21205260]

約数ペア:

[(1, 21205260), (2, 10602630), (3, 7068420), (4, 5301315), (5, 4241052), (6, 3534210), (9, 2356140), (10, 2120526), (12, 1767105), (15, 1413684), (18, 1178070), (20, 1060263), (27, 785380), (30, 706842), (36, 589035), (45, 471228), (54, 392690), (60, 353421), (90, 235614), (107, 198180), (108, 196345), (135, 157076), (180, 117807), (214, 99090), (270, 78538), (321, 66060), (367, 57780), (428, 49545), (535, 39636), (540, 39269), (642, 33030), (734, 28890), (963, 22020), (1070, 19818), (1101, 19260), (1284, 16515), (1468, 14445), (1605, 13212), (1835, 11556), (1926, 11010), (2140, 9909), (2202, 9630), (2889, 7340), (3210, 6606), (3303, 6420), (3670, 5778), (3852, 5505), (4404, 4815)]