21054884

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{251}}^1\times {\mathrm{313}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 37664928

約数和(自身を除く): 16610044

約数列:

[1, 2, 4, 67, 134, 251, 268, 313, 502, 626, 1004, 1252, 16817, 20971, 33634, 41942, 67268, 78563, 83884, 157126, 314252, 5263721, 10527442, 21054884]

約数ペア:

[(1, 21054884), (2, 10527442), (4, 5263721), (67, 314252), (134, 157126), (251, 83884), (268, 78563), (313, 67268), (502, 41942), (626, 33634), (1004, 20971), (1252, 16817)]