1290361825

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{811}}^1\times {\mathrm{2053}}^1$

素因数の和:2905

約数の個数: 24

約数和(自身を含む): 1654505216

約数和(自身を除く): 364143391

約数列:

[1, 5, 25, 31, 155, 775, 811, 2053, 4055, 10265, 20275, 25141, 51325, 63643, 125705, 318215, 628525, 1591075, 1664983, 8324915, 41624575, 51614473, 258072365, 1290361825]

約数ペア:

[(1, 1290361825), (5, 258072365), (25, 51614473), (31, 41624575), (155, 8324915), (775, 1664983), (811, 1591075), (2053, 628525), (4055, 318215), (10265, 125705), (20275, 63643), (25141, 51325)]