2019920440

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{385481}}^1$

素因数の和:385623

約数の個数: 32

約数和(自身を含む): 4579526160

約数和(自身を除く): 2559605720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 385481, 770962, 1541924, 1927405, 3083848, 3854810, 7709620, 15419240, 50498011, 100996022, 201992044, 252490055, 403984088, 504980110, 1009960220, 2019920440]

約数ペア:

[(1, 2019920440), (2, 1009960220), (4, 504980110), (5, 403984088), (8, 252490055), (10, 201992044), (20, 100996022), (40, 50498011), (131, 15419240), (262, 7709620), (524, 3854810), (655, 3083848), (1048, 1927405), (1310, 1541924), (2620, 770962), (5240, 385481)]