10001020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4951}}^1$

素因数の和:5061

約数の個数: 24

約数和(自身を含む): 21214368

約数和(自身を除く): 11213348

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 4951, 9902, 19804, 24755, 49510, 99020, 500051, 1000102, 2000204, 2500255, 5000510, 10001020]

約数ペア:

[(1, 10001020), (2, 5000510), (4, 2500255), (5, 2000204), (10, 1000102), (20, 500051), (101, 99020), (202, 49510), (404, 24755), (505, 19804), (1010, 9902), (2020, 4951)]