64480975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{997}}^1$

素因数の和:1219

約数の個数: 24

約数和(自身を含む): 86626400

約数和(自身を除く): 22145425

約数列:

[1, 5, 13, 25, 65, 199, 325, 995, 997, 2587, 4975, 4985, 12935, 12961, 24925, 64675, 64805, 198403, 324025, 992015, 2579239, 4960075, 12896195, 64480975]

約数ペア:

[(1, 64480975), (5, 12896195), (13, 4960075), (25, 2579239), (65, 992015), (199, 324025), (325, 198403), (995, 64805), (997, 64675), (2587, 24925), (4975, 12961), (4985, 12935)]