18502988

素因数分解:

$2^2\times 7^2\times {\mathrm{67}}^1\times {\mathrm{1409}}^1$

素因数の和:1494

約数の個数: 36

約数和(自身を含む): 38256120

約数和(自身を除く): 19753132

約数列:

[1, 2, 4, 7, 14, 28, 49, 67, 98, 134, 196, 268, 469, 938, 1409, 1876, 2818, 3283, 5636, 6566, 9863, 13132, 19726, 39452, 69041, 94403, 138082, 188806, 276164, 377612, 660821, 1321642, 2643284, 4625747, 9251494, 18502988]

約数ペア:

[(1, 18502988), (2, 9251494), (4, 4625747), (7, 2643284), (14, 1321642), (28, 660821), (49, 377612), (67, 276164), (98, 188806), (134, 138082), (196, 94403), (268, 69041), (469, 39452), (938, 19726), (1409, 13132), (1876, 9863), (2818, 6566), (3283, 5636)]