19647380

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7499}}^1$

素因数の和:7639

約数の個数: 24

約数和(自身を含む): 41580000

約数和(自身を除く): 21932620

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7499, 14998, 29996, 37495, 74990, 149980, 982369, 1964738, 3929476, 4911845, 9823690, 19647380]

約数ペア:

[(1, 19647380), (2, 9823690), (4, 4911845), (5, 3929476), (10, 1964738), (20, 982369), (131, 149980), (262, 74990), (524, 37495), (655, 29996), (1310, 14998), (2620, 7499)]