21352870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{2521}}^1$

素因数の和:2557

約数の個数: 48

約数和(自身を含む): 48301344

約数和(自身を除く): 26948474

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 121, 154, 242, 385, 605, 770, 847, 1210, 1694, 2521, 4235, 5042, 8470, 12605, 17647, 25210, 27731, 35294, 55462, 88235, 138655, 176470, 194117, 277310, 305041, 388234, 610082, 970585, 1525205, 1941170, 2135287, 3050410, 4270574, 10676435, 21352870]

約数ペア:

[(1, 21352870), (2, 10676435), (5, 4270574), (7, 3050410), (10, 2135287), (11, 1941170), (14, 1525205), (22, 970585), (35, 610082), (55, 388234), (70, 305041), (77, 277310), (110, 194117), (121, 176470), (154, 138655), (242, 88235), (385, 55462), (605, 35294), (770, 27731), (847, 25210), (1210, 17647), (1694, 12605), (2521, 8470), (4235, 5042)]