21825325

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 28123200

約数和(自身を除く): 6297875

約数列:

[1, 5, 25, 41, 107, 199, 205, 535, 995, 1025, 2675, 4387, 4975, 8159, 21293, 21935, 40795, 106465, 109675, 203975, 532325, 873013, 4365065, 21825325]

約数ペア:

[(1, 21825325), (5, 4365065), (25, 873013), (41, 532325), (107, 203975), (199, 109675), (205, 106465), (535, 40795), (995, 21935), (1025, 21293), (2675, 8159), (4387, 4975)]