19220920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3457}}^1$

素因数の和:3607

約数の個数: 32

約数和(自身を含む): 43570800

約数和(自身を除く): 24349880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3457, 5560, 6914, 13828, 17285, 27656, 34570, 69140, 138280, 480523, 961046, 1922092, 2402615, 3844184, 4805230, 9610460, 19220920]

約数ペア:

[(1, 19220920), (2, 9610460), (4, 4805230), (5, 3844184), (8, 2402615), (10, 1922092), (20, 961046), (40, 480523), (139, 138280), (278, 69140), (556, 34570), (695, 27656), (1112, 17285), (1390, 13828), (2780, 6914), (3457, 5560)]