18998380

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{17923}}^1$

素因数の和:17985

約数の個数: 24

約数和(自身を含む): 40651632

約数和(自身を除く): 21653252

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 17923, 35846, 71692, 89615, 179230, 358460, 949919, 1899838, 3799676, 4749595, 9499190, 18998380]

約数ペア:

[(1, 18998380), (2, 9499190), (4, 4749595), (5, 3799676), (10, 1899838), (20, 949919), (53, 358460), (106, 179230), (212, 89615), (265, 71692), (530, 35846), (1060, 17923)]