21349405

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2411}}^1$

素因数の和:2457

約数の個数: 32

約数和(自身を含む): 33343488

約数和(自身を除く): 11994083

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 115, 161, 253, 385, 805, 1265, 1771, 2411, 8855, 12055, 16877, 26521, 55453, 84385, 132605, 185647, 277265, 388171, 609983, 928235, 1940855, 3049915, 4269881, 21349405]

約数ペア:

[(1, 21349405), (5, 4269881), (7, 3049915), (11, 1940855), (23, 928235), (35, 609983), (55, 388171), (77, 277265), (115, 185647), (161, 132605), (253, 84385), (385, 55453), (805, 26521), (1265, 16877), (1771, 12055), (2411, 8855)]