133668668

素因数分解:

$2^2\times 7^2\times {\mathrm{681983}}^1$

素因数の和:682001

約数の個数: 18

約数和(自身を含む): 272111616

約数和(自身を除く): 138442948

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 681983, 1363966, 2727932, 4773881, 9547762, 19095524, 33417167, 66834334, 133668668]

約数ペア:

[(1, 133668668), (2, 66834334), (4, 33417167), (7, 19095524), (14, 9547762), (28, 4773881), (49, 2727932), (98, 1363966), (196, 681983)]