17964020

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2309}}^1$

素因数の和:2707

約数の個数: 24

約数和(自身を含む): 37837800

約数和(自身を除く): 19873780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2309, 3890, 4618, 7780, 9236, 11545, 23090, 46180, 898201, 1796402, 3592804, 4491005, 8982010, 17964020]

約数ペア:

[(1, 17964020), (2, 8982010), (4, 4491005), (5, 3592804), (10, 1796402), (20, 898201), (389, 46180), (778, 23090), (1556, 11545), (1945, 9236), (2309, 7780), (3890, 4618)]