21085012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{5711}}^1$

素因数の和:5799

約数の個数: 24

約数和(自身を含む): 40303872

約数和(自身を除く): 19218860

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 5711, 11422, 22844, 74243, 148486, 296972, 405481, 810962, 1621924, 5271253, 10542506, 21085012]

約数ペア:

[(1, 21085012), (2, 10542506), (4, 5271253), (13, 1621924), (26, 810962), (52, 405481), (71, 296972), (142, 148486), (284, 74243), (923, 22844), (1846, 11422), (3692, 5711)]