21000496970

素因数分解:

$2^1\times 5^1\times {\mathrm{1307}}^1\times {\mathrm{1606771}}^1$

素因数の和:1608085

約数の個数: 16

約数和(自身を含む): 37829839968

約数和(自身を除く): 16829342998

約数列:

[1, 2, 5, 10, 1307, 2614, 6535, 13070, 1606771, 3213542, 8033855, 16067710, 2100049697, 4200099394, 10500248485, 21000496970]

約数ペア:

[(1, 21000496970), (2, 10500248485), (5, 4200099394), (10, 2100049697), (1307, 16067710), (2614, 8033855), (6535, 3213542), (13070, 1606771)]