28990325

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12743}}^1$

素因数の和:12773

約数の個数: 24

約数和(自身を含む): 44247168

約数和(自身を除く): 15256843

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 12743, 63715, 89201, 165659, 318575, 446005, 828295, 1159613, 2230025, 4141475, 5798065, 28990325]

約数ペア:

[(1, 28990325), (5, 5798065), (7, 4141475), (13, 2230025), (25, 1159613), (35, 828295), (65, 446005), (91, 318575), (175, 165659), (325, 89201), (455, 63715), (2275, 12743)]