21208380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{353473}}^1$

素因数の和:353485

約数の個数: 24

約数和(自身を含む): 59383632

約数和(自身を除く): 38175252

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 353473, 706946, 1060419, 1413892, 1767365, 2120838, 3534730, 4241676, 5302095, 7069460, 10604190, 21208380]

約数ペア:

[(1, 21208380), (2, 10604190), (3, 7069460), (4, 5302095), (5, 4241676), (6, 3534730), (10, 2120838), (12, 1767365), (15, 1413892), (20, 1060419), (30, 706946), (60, 353473)]