81405972

素因数分解:

$2^2\times 3^6\times {\mathrm{27917}}^1$

素因数の和:27939

約数の個数: 42

約数和(自身を含む): 213600618

約数和(自身を除く): 132194646

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 729, 972, 1458, 2916, 27917, 55834, 83751, 111668, 167502, 251253, 335004, 502506, 753759, 1005012, 1507518, 2261277, 3015036, 4522554, 6783831, 9045108, 13567662, 20351493, 27135324, 40702986, 81405972]

約数ペア:

[(1, 81405972), (2, 40702986), (3, 27135324), (4, 20351493), (6, 13567662), (9, 9045108), (12, 6783831), (18, 4522554), (27, 3015036), (36, 2261277), (54, 1507518), (81, 1005012), (108, 753759), (162, 502506), (243, 335004), (324, 251253), (486, 167502), (729, 111668), (972, 83751), (1458, 55834), (2916, 27917)]