81241212

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{1237}}^1$

素因数の和:1678

約数の個数: 48

約数和(自身を含む): 204794912

約数和(自身を除く): 123553700

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 421, 842, 1237, 1263, 1684, 2474, 2526, 3711, 4948, 5052, 5473, 7422, 10946, 14844, 16081, 16419, 21892, 32162, 32838, 48243, 64324, 65676, 96486, 192972, 520777, 1041554, 1562331, 2083108, 3124662, 6249324, 6770101, 13540202, 20310303, 27080404, 40620606, 81241212]

約数ペア:

[(1, 81241212), (2, 40620606), (3, 27080404), (4, 20310303), (6, 13540202), (12, 6770101), (13, 6249324), (26, 3124662), (39, 2083108), (52, 1562331), (78, 1041554), (156, 520777), (421, 192972), (842, 96486), (1237, 65676), (1263, 64324), (1684, 48243), (2474, 32838), (2526, 32162), (3711, 21892), (4948, 16419), (5052, 16081), (5473, 14844), (7422, 10946)]